Grade 7 Mathematics - Framework

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Teacher PacketGrade 7 MathematicsTeacher At-Home Activity PacketThe At-Home Activity Packet includes 19 sets of practice problems that align toimportant math concepts that have likely been taught this year.Since pace varies from classroom to classroom, feel free to select the pages that alignwith the topics your students have covered.The At-Home Activity Packet includes instructions to the parent and can be printedand sent home.This At-Home Activity Packet—Teacher Guide includes all the same practice setsas the Student version with the answers provided for your reference.See the Grade 7 Mathconcepts covered inthis packet! 2020 Curriculum Associates, LLC. All rights reserved.

Teacher PacketGrade 7 Math concepts covered in this packetConceptUnderstanding Operationswith IntegersUnderstanding Operationswith Rational NumbersPractice1Understanding Addition with Negative Integer.s 32Understanding Subtraction with Negative5Integers.3Understanding Multiplication with Negative7Integers.4Adding and Subtracting Positive and Negative9Fractions and Decimals.5Multiplying Negative Rational Number. 116Dividing Negative Rational Numbers. 127Writing Rational Numbers as Repeating13Decimals.8Understanding Proportional Relationships. 149Interpreting Graphs of Proportional15Relationships.10Recognizing Graphs of Proportional17Relationships.11Solving Multi-Step Ratio Problems. 1912Solving Problems Involving Multiple Percents. 2013Solving Problems Involving Percent Change. 2214Solving Problems Involving Percent Error. 2315Expanding Expressions. 2416Factoring Expressions. 2617Understanding Representing a Situation with28Different Expressions.18Writing and Solving Equations with Two or29More Addends.19Writing and Solving Inequalities. 30Understanding Ratios andProportional RelationshipsUnderstanding Percentsand ProportionalRelationshipsUnderstandingExpressions, Equations,and Inequalities 2020 Curriculum Associates, LLC. All rights reserved.Fluency and Skill Practice

FLUENCY AND SKILLS PRACTICEName:LESSON 7Teacher PacketUnderstanding Addition with Negative Integers1Between the time Iko woke up and lunchtime, the temperature rose by 11 . Thenby the time he went to bed, the temperature dropped by 14 .Write an addition expression for the temperature relative to when Iko woke up.11 1 (214)Draw a model using integer chips and circle the zero pairs.1 1 1 1 1 1 1 1 1 1 12 2 2 2 2 2 2 2 2 2 2 2 2 2What is the value of the remaining integer chips after the zero pairs are removed?23What is the net change in the temperature relative to when Iko woke up?23 , or a loss of 3 2Complete the number line model to find (25) 1 6.625210 29 28 27 26 25 24 23 22 21(25) 1 6 50123456789 101How would the number line model be different if you wanted to find (25) 1 (26)?Possible answer: I would start the same way, by drawing an arrow from 0 to25. Then I would draw an arrow from 25 to 211 to show adding 26. Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 7Page 1 of 23

FLUENCY AND SKILLS PRACTICEName:LESSON 7Teacher PacketUnderstanding Addition with NegativeIntegers continuedFor problems 3–5, consider the sum 4 1 (28).3Explain how you can use a number line to find the sum.Possible answer: I can draw a number line with the first arrow pointing leftfrom 0 to 4, then draw an arrow 8 units to the left from 4 to 24. The arrowends at 24, so the sum is 24.4Explain how you can use chips to determine the sum.Possible answer: I can use 4 positive chips and 8 negative chips. I can groupzero pairs, then count the remaining chips. There are 4 negative chipsremaining, so the sum is 24.5Does it matter what order you add the numbers in the problem? Explain howchips and number lines support your answer.No; Possible answer: On the number line, I can draw an arrow from 0 to 28,then draw an arrow from 28 to 24. Using the chips, I could use 8 negativechips and then 4 positive chips. I will make the same number of zero pairs,and there will still be 4 negative chips remaining.6Write an addition expression that has a value of 28.Possible answer: 5 1 (213) Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 7Page 2 of 24

FLUENCY AND SKILLS PRACTICEName:LESSON 9Teacher PacketUnderstanding Subtraction with NegativeIntegers1Mary takes 9 grapes from Rohin and then decides to give 4 back.Write a subtraction problem to describe how many grapes Rohin has. 29 2 (24)Draw a model for the subtraction problem using integer chips.2 2 2 2 2 2 2 2 24How many negative integer chips did you cross out?Write the subtraction as addition.29 1 4Draw a model for the addition problem using integer chips.2 2 2 2 2 22221111How do the two integer chip models show that 29 2 (24) is the same as 29 1 4?They both show that when you start with 29, you can take away 24 oradd 4. In each model, you get rid of 4 negative integer chips and you have5 negative integer chips left.What is the change in the number of grapes Rohin has? Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.25GRADE 7LESSON 9Page 1 of 25

FLUENCY AND SKILLS PRACTICEName:LESSON 9Teacher PacketUnderstanding Subtraction with NegativeIntegers continued2Jin is 3 floors above ground level in a hotel. Leila is on a parking level of thehotel that is 4 floors below ground level. How many floors apart are they? Draw anumber line model to show 3 2 (24).301What is 3 2 (24)?2(24)23456787What is the meaning of this answer in the context of the problem?Jin and Leila are 7 floors apart.Rewrite 3 2 (24) as an addition problem.331457The variables a and b represent positive numbers. When you find the differencea 2 (2b), do you expect the result to be less than or greater than a? What if a isnegative and b is positive? Explain.Possible answer: Whether a is positive or negative, I can write a 2 (2b) asa 1 b, so I am always adding a positive value to a. The difference will alwaysbe greater than a. Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 9Page 2 of 26

FLUENCY AND SKILLS PRACTICEName:LESSON 11Teacher PacketUnderstanding Multiplication withNegative IntegersPractice multiplying negative integers.1Find each product. Then describe any patterns you notice.3 (27) 52212 (27) 52141 (27) 5270 (27) 50(21) (27) 57(22) (27) 514(23) (27) 521Possible answer: The product of a positive number and a negative numberis always negative, and the product of two negative numbers is alwayspositive.2Solve each problem. Explain how you determined the sign of the products.(23)(9) 5 227(25)(26) 5(28)(25) 530(21)(2)(26) 5(22)(24)(27) 5 2564012(23)(24)(23)(21) 536Possible answer: The product of two negative numbers is positive. Theproduct of a positive number and a negative number is negative. Theproduct of three negative numbers is negative because the product ofthe first two factors is positive. That positive factor is then multiplied bya negative number, resulting in a negative product. The product of fournegative numbers is positive because the product of each pair of negativefactors is positive and then the product of two positive numbers is positive. Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 11Page 1 of 27

FLUENCY AND SKILLS PRACTICEName:LESSON 11Teacher PacketUnderstanding Multiplication withNegative Integers continued3Use the distributive property to show why the product (26)(23) is positive.The first step is done for you.(26)(23) 1 (26)(3) 5 (26)[(23) 1 3](26)(23) 1 (26)(3) 5 (26)(0)(26)(23) 1 (26)(3) 5 0(26)(23) 1 (218) 5 0(26)(23) 5 184Mark’s work to simplify (23)(25)(22) is shown. Explain his error and show how tofind the correct product.(23)(25)(22) 5 (215)(22) 5 30Possible answer: The product of two negative numbers is positive,so (23) (25) 5 15. The problem (23)(25)(22) can be rewritten as(15) (22) instead of (215)(22). The product of a positive numberand a negative number is negative, so (15)(22) 5 230. Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 11Page 2 of 28

FLUENCY AND SKILLS PRACTICEName:LESSON 10Teacher PacketAdding and Subtracting Positive and NegativeFractions and DecimalsEstimate each problem to check if the student’s answer is reasonable. If not, crossout the answer and write the correct answer. Show your work.Problems1Student Answers21.21.3 2 (22.5)3.8Possible estimate: 1 2 (23) 5 1 1 31.3 2 (22.5) 5 1.3 1 2.5545 3.8223 123 1 1 6 26··2··3··23 1 1 6 2 5 3 1316··2··324.2 2 (22.9)Possible estimate: 23 1 7 5 421.33··2··Possible estimate: 24 2 (23) 5 24 1 35 21431 2 21 1 235··2··5··23 13··Possible estimate: 3 2 3 1 3 5 0 1 3533310···31 2 21 1 23 5 3 35··2··5·· Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.10···GRADE 7LESSON 10Page 1 of 29

FLUENCY AND SKILLS PRACTICEName:LESSON 10Teacher PacketAdding and Subtracting Positive and NegativeFractions and Decimals continuedProblems5Student Answers11.65.9 2 7.3 2 10.2211.6Possible estimate:6 2 7 2 10 5 21 2 105 2115.9 2 7.3 2 10.2 5 211.66122 5 5 2 1 22 1 2 1 5 16··3··3··6··Possible estimate:26 2 (22) 1 4 5 26 1 2 1 55 24 1 551721.411.5 2 5.4 2 4.71.4Possible estimate:12 2 5 2 5 5 7 2 55211.5 2 5.4 2 4.7 5 1.48211 1 2 12 1 2 1 221 1 28··4··2··218··72 1 ··8Possible estimate:211 2 12 2 (222) 5 211 2 12 1 225 223 1 225 21211 1 2 12 1 2 1 221 1 2 5 21 78··94··2··8··How does estimating an addition or subtraction problem help you know if ananswer is reasonable?Possible answer: I can use the estimate to determine if the correct answeris positive or negative. I can also determine if the estimate and the givenanswer are close. Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 10Page 2 of 210

FLUENCY AND SKILLS PRACTICEName:LESSON 12Teacher PacketMultiplying Negative Rational NumbersFind the product of the rational numbers. The answers are mixed up at thebottom of the page. Cross out the answers as you complete the problems.12 3 2724··21 3 263··35··22 1 3 554··23 3 21 27··63··22 1123 5 3 22 17··2··512···710···5··2··3··23223 142 3 234··5··927··0.75 3 2483··7··20.2 3 2295··2 or 0.08212··11 0.2 3 20.4529 1 or 29.57··1 or 0.525···10 2.5 3 23 45··20.35 3 21 312 20.25 3 21.40.3520.092··14 23.9 3 5 59··13 22.3 3 6.815 24.2 3 26 27··6221 2 or 21. ··215.6426 2 or 26.43··5··Answers221 2215.6429 1212320.093··25·· Curriculum Associates, LLC2··10··152··7··23 122 1120.359226 22··25··7··Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.12··5··GRADE 7LESSON 1211

FLUENCY AND SKILLS PRACTICEName:LESSON 12Teacher PacketDividing Negative Rational NumbersFind each quotient.125 4 527··28 4 29··22 3 4 1124 2 4 2157··2121.2510 9.28 4 23.2616··21 4 4 23 27··3··37··828 4 6.420···444··7273··54··3 4 267··10··21 127433··23 4 0.592··2311 0.056 4 20.00422.97··21423 1 4 1.23··22 79··12 20.28 4 0.072413 Explain the steps you used to solve problem 11.Possible explanation: I changed the expression to 56 4 24 by multiplyingthe dividend and the divisor by 1,000. Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 1212

FLUENCY AND SKILLS PRACTICEName:LESSON 13Teacher PacketWriting Rational Numbers as RepeatingDecimalsWrite each number as a repeating decimal.1129··2211··0. ··1320. ···187411··13··0. ···635240. ··369··2136··2. ··4722.1 ··621 586··1399··21.8 ··390. ···13When the denominator of a proper fraction is 99, what do you notice about therepeating digit(s) in its decimal form?Possible answer: The numerator tells the repeating digits.For example, 28 5 0. ···28 .99··· Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 1313

FLUENCY AND SKILLS PRACTICEName:LESSON 3Teacher PacketUnderstanding Proportional RelationshipsRead and solve the problems. Show your work.1Josie is making pizza dough. Complete the double number line by filling in themissing values. Then write an equation that models the relationship between thetotal cups of flour, c, and number of batches, n. Show your work.11Cups of 0Flour34122433 34Batches 012345c 5 3n4··2Lilli bought each of her friends a pair of colorful socks that cost 5.50.Complete the table to show how much Lilli paid to buy different numbers ofsocks. Then write an equation that shows the total cost, c, for p pairs of socks.CostPairs of socks 5.50 11.00 16.50 22.00 27.5012345c 5 5.5p3Explain how using a table is similar to using a double number line and how itis different.Possible answer:Double number lines and tables both show corresponding values in aproportional relationship. The ratios formed by corresponding values arealways equivalent in both a table and a double number line. A doublenumber line usually starts at 0 and increases incrementally. A table doesnot necessarily start at 0 and may not increase incrementally.4Mrs. Lopez types at a constant rate. The constant of proportionality for therelationship between the number of words she types, w, and the number ofminutes she types, m, is 38. Write an equation to show this relationship.w 5 38m Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 314

FLUENCY AND SKILLS PRACTICEName:LESSON 4Teacher PacketInterpreting Graphs of ProportionalRelationshipsThe graph shows the cost of apples at a local market. Use the graph to answerproblems 1–3.What is the cost of 1 apple and of 3 apples?How do you know?Possible answer: One apple costs 0.75, and 3 applescost 2.25. The points (1, 0.75) and (3, 2.25) are onthe graph. The x-coordinate of 1 corresponds tothe y-coordinate of 0.75, and the x-coordinate of3 corresponds to the y-coordinate of 2.25.54.543.532.521.510.50Cost ( )1yx0 1 2 3 4 5 6 7 8 9 10Number of Apples2What does the point (0, 0) represent in this context?Possible answer: (0, 0) means that 0 apples cost 0.00.3What does the point (2, 1.5) represent in this context?Possible answer: The cost of 2 apples is 1.50.4How much does Manuela earn for each hour of tutoring?Explain.Possible answer: 10 per hour; Possible explanation: The graphgoes through the point (1, 10). The y-coordinateassociated with the x-coordinate of 1 is the constant ofproportionality.Earnings ( )The graph shows Manuela’s earnings for the number of hours she spendstutoring. Use the graph to answer problems 4 and 5.1009080706050403020100yx0 2 4 6 8 10 12 14 16 18 20Hours Worked5Write an equation that shows the relationship between Manuela’s earnings, y, andhours, x.y 5 10x Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 4Page 1 of 215

FLUENCY AND SKILLS PRACTICEName:LESSON 4Teacher PacketInterpreting Graphs of ProportionalRelationships continued6What is the constant of proportionality?Explain how you know.50; Possible explanation: The point (1, 50) is onthe graph. The y-coordinate associated with thex-coordinate of 1 is the constant of proportionality.7Distance (Miles)The graph shows the distance Jason’s family traveled on a recent road trip.Use the graph to answer problems 6–8.Identify and interpret one other point on the graph.2502252001751501251007550250Possible answer: The point (2, 100) means thatJason’s family traveled 100 miles in 2 hours.8yx0 1 2 3 4 5 6 7 8 9 10Hours TraveledWrite an equation that models the distance, d, traveled in t hours.d 5 50t9Randy claims that he can purchase 3.5 pounds of chickensalad for 23.50. Is he correct? Explain.No; Possible explanation: According to the graph,3.5 corresponds to the point halfway between 22.5and 30, and 23.5 is not halfway.Cost ( )The graph shows the cost per pound of chicken salad.Use the graph to answer problems 9 and 10.7567.56052.54537.53022.5157.5010 Explain how you can determine how much chicken saladyx0 1 2 3 4 5 6 7 8 9 10Chicken Salad (pounds)may be purchased for 52.50.Possible answer: You can find the x-coordinate thatcorresponds with the y-value of 52.5 on the graph. Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 4Page 2 of 216

FLUENCY AND SKILLS PRACTICEName:LESSON 4Teacher PacketRecognizing Graphs of ProportionalRelationshipsCircle all the problems with graphs that do NOT represent a proportionalrelationship. For the problems that are circled, explain why the graphs donot represent a proportional relationship.11098765432102yx0 1 2 3 4 5 6 7 8 9 1050454035302520151050yx0 1 2 3 4 5 6 7 8 9 10The graph does not go throughthe origin.31098765432104yx0 1 2 3 4 5 6 7 8 9 10109876543210yx0 1 2 3 4 5 6 7 8 9 10The graph does not go throughthe origin.51098765432106yy108642x0 1 2 3 4 5 6 7 8 9 100x05101520The x-values do not change as they-values increase. Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 4Page 1 of 217

FLUENCY AND SKILLS PRACTICEName:LESSON 4Teacher PacketRecognizing Graphs of ProportionalRelationships continued71098765432108yx0 1 2 3 4 5 6 7 8 9 10109876543210yx0 1 2 3 4 5 6 7 8 9 10The y-values do not change as thex-values increase.910987654321010yx0 1 2 3 4 5 6 7 8 9 10The graph is not a straight line.109876543210yx0 1 2 3 4 5 6 7 8 9 10The graph is not a straight line.11 Without analyzing specific points on a graph, explain how you know whethera graph shows a proportional relationship.Possible answer: The graph of a proportional relationship is a straight linethat passes through the origin, with all points on the line representingequivalent ratios. Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 4Page 2 of 218

FLUENCY AND SKILLS PRACTICEName:LESSON 5Teacher PacketSolving Multi-Step Ratio ProblemsSolve each problem.1At The Green House of Salad, you get a 1 coupon for every 3 salads you buy.What is the least number of salads youcould buy to get 10 in coupons?2Kim orders catering from Midtown Dinerfor 35. She spends 5 on a large orderof potato salad and the rest on turkeysandwiches. Each sandwich is 2.50.How many sandwiches does Kim buy?30 salads3Molly and Liza are exercising. Molly does10 push-ups at the same time as Lizadoes 15 push-ups. When Molly does40 push-ups, how many push-ups doesLiza do?12 sandwiches4A shark swims at a speed of 25 miles perhour. The shark rests after 40 miles. Howlong, in minutes, does the shark swimbefore resting?60 push-ups5Ali and Janet are selling gifts at a localcraft show. For every bar of soap that Alisells, she earns 5. For every mug thatJanet sells, she earns twice as much asAli. Ali sells 5 bars of soap, and Janetsells 7 mugs. How much money did theymake altogether?96 minutes6Ted is making trail mix for a party. Hemixes 1 1 cups of nuts, 1 cup of raisins,24····1and cup of pretzels. How many cups4··of pretzels does Ted need to make15 cups of trail mix?1 7 cups of pretzels 9578··The ratio of chaperones to students on afield trip is 2 : 7. There are 14 chaperoneson the field trip. In all, how manychaperones and students are there?8Dayren is driving to visit family. Shedrives at an average of 65 miles perhour. She drives 227.5 miles beforelunch and then 97.5 miles after lunch.How many hours did she spend driving?63 students and chaperones Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.5 hoursGRADE 7LESSON 519

FLUENCY AND SKILLS PRACTICELESSON 20Name:Teacher PacketSolving Problems Involving Multiple PercentsSolve each problem.1A chair’s regular price is 349. It is on clearance for 30% off, and a customer uses a15% off coupon after that. What is the final cost of the chair before sales tax? 207.662A calculator is listed for 110 and is on clearance for 35% off. Sales tax is 7%.What is the cost of the calculator? 76.513Cara started working for 9 per hour. She earns a 4% raise every year. What is herhourly wage after three years? 10.12 per hour4A factory manufactures a metal piece in 32 minutes. New technology allowed thefactory to cut that time by 8%. Then another improvement cut the time by 5%.How long does it take to manufacture the piece now? Round your answer tothe nearest minute.28 minutes5An apartment costs 875 per month to rent. The owner raises the price by 20%and then gives a discount of 8% to renters who sign an 18-month lease. Howmuch less do renters who sign an 18-month lease pay per month to rent theapartment? 84 less Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 20Page 1 of 220

FLUENCY AND SKILLS PRACTICELESSON 20Name:Teacher PacketSolving Problems Involving MultiplePercents continued6Damon buys lumber worth 562. He gets a 20% contractor’s discount. The salestax is 6%. His credit card gives him 2% off. How much does he pay? 467.047Cindy is shopping for a television. The original price is 612. Store A has thetelevision on clearance for 30% off. Store B has it on clearance for 25% off, andCindy has a 10% off coupon to use at Store B. At which store will she pay less?How much less?Store B; 15.30 less8John goes to a restaurant and has a bill of 32.57. He uses a 10% off coupon onthe cost of the meal. The tax is 8%. He leaves a tip of 18% on the amount beforethe coupon or tax is applied. How much does he spend? 37.529Explain which situation will give you the best price: a discount of 15% and then10% off that amount, a discount of 10% and then 15% off that amount, or adiscount of 25%.a discount of 25%; Possible explanation: Applying a 15% off discount and a10% off discount in either order results in the same final amount because ofthe commutative property of multiplication. This final amount is more thanwhen a 25% off discount is applied. Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 20Page 2 of 221

FLUENCY AND SKILLS PRACTICEName:LESSON 21Teacher PacketSolving Problems Involving Percent ChangeFind the percent change and tell whether it is a percent increase or apercent decrease.12Original amount: 20End amount: 1525% decrease350% increase4Original amount: 625End amount: 55012% decrease56Original amount: 165End amount: 222.75Original amount: 326End amount: 423.8030% increase8Original amount: 27End amount: 38.6143% increase9Original amount: 320End amount: 11265% decrease35% increase7Original amount: 30End amount: 45Original amount: 60End amount: 70.0216.7% increaseHow do you know when a situation involves a percent increase or apercent decrease?Possible answer: When the end amount is greater than the original amount,there is a percent increase. When the end amount is less than the originalamount, there is a percent decrease. Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 2122

FLUENCY AND SKILLS PRACTICEName:LESSON 21Teacher PacketSolving Problems Involving Percent ErrorSolve each problem. Round to the nearest hundredth of a percent if needed.1Mrs. Rowan allotted 30 minutes at thebeginning of class for her students tocomplete an exam. The last student took42 minutes to complete the exam. Whatis Mrs. Rowan’s percent error?2Harper needs to mail an envelope. Sheweighs it at home as 10.4 ounces. Whenshe gets to the post office, the clerkweighs it at 9.6 ounces. What is thepercent error in the weight of theenvelope?40%37.69%An airline ticket states that the flighttakes 2 hours and 45 minutes. Theflight time is actually 2 hours and54 minutes. What is the percent errorin the flight time?4Luna buys a shirt that costs 15.65. Shegives the cashier 20 and receives 3.25in change. What is the percent error inthe amount of change she was given?25.29%5.45%5Judy thinks there will be 325 people atthe county fair on Friday, while Atticusthinks there will be 600 people. OnFriday, 452 people attend the fair. Who iscloser in their estimate? What is thedifference between the percent errors?Judy is closer by about 4.64%.6Sussex County received 43 inches ofrainfall this year. The percent error in thelocal meteorologist’s rainfall predictionwas about 18.02%. What are twopossible values for the meteorologist’sprediction?35.25 inches, 50.75 inches Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 2123

FLUENCY AND SKILLS PRACTICEName:LESSON 15Teacher PacketExpanding ExpressionsExpand each expression and combine like terms if possible.124(x 2 2)4x 2 841 (x 2 9)21(x 1 16)4··1x 2 32 (x 1 18 2 2x)3··4x 1 32621(2x 2 35)5··21x 2 43··724(2x 2 8)23x 2 2153··323(x 1 7)1x 1 74··82 2x 1 123 (16x 2 27 2 1)4··5··92121 5x 2 5 2 1 2x6··12x 2 213··28x 1 60Determine which expressions, if any, are equivalent. Show your work.10 4(x 2 3)6x 2 2(x 2 3)x 1 3(x 2 2) 2 64(x 2 3)6x 2 2(x 2 3)x 1 3(x 2 2) 2 64x 2 126x 2 2x 1 6x 1 3x 2 6 2 64x 1 64x 2 124(x 2 3) and x 1 3(x 2 2) 2 6 are equivalent expressions. Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 15Page 1 of 224

FLUENCY AND SKILLS PRACTICEName:LESSON 15Teacher PacketExpanding Expressions11 1 (9x 1 16 1 2) 1 2x3··continued7x 1 14 2 2(x 1 4)7x 1 14 2 2(x 1 4)x 2 3 1 7(x 1 3) 2 3x 2 12x 2 3 1 7(x 1 3) 2 3x 2 123··7x 1 14 2 2x 2 8x 2 3 1 7x 1 21 2 3x 2 121 (9x 1 18) 1 2x5x 1 65x 1 61 (9x 1 16 1 2) 1 2x3··3x 1 6 1 2x5x 1 6All three expressions are equivalent.12 Use two different methods to expand 1 (x 1 2x 1 16 2 8).4··Possible answer:Method 1: 1(x 1 2x 1 16 2 8)4··4··1x 1 1x 1 4 2 22··1 (3x 1 8)4··4··3x 1 23x 1 24··4·· Curriculum Associates, LLCMethod 2: 1(x 1 2x 1 16 2 8)Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 15Page 2 of 225

FLUENCY AND SKILLS PRACTICEName:LESSON 15Teacher PacketFactoring ExpressionsFactor each expression.128a 1 168(a 1 2)434(3x 2 5)5214w 2 2127(2w 1 3)712x 2 208a 2 12b 1 2826(a 2 3)64(2a 2 3b 1 7)82a 1 3 1 7a3(3a 1 1)22x 2 8x 1 2026a 1 1826x 1 15y 2 2423(2x 2 5y 1 8)9210(x 2 2)5y 1 10 2 25y210(2y 2 1)10 Simplify (4x 1 7) 2 (23x 2 9) 1 9x 2 28. Then rewrite in factored form, if possible.Show your work.4x 1 7 1 3x 1 9 1 9x 2 2816x 2 124(4x 2 3) Curriculum Associates, LLCCopying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 15Page 1 of 226

FLUENCY AND SKILLS PRACTICEName:LESSON 15Teacher PacketFactoring Expressionscontinued11 Determine which of the following expressions are equivalent. Show your work. 1(x 2 3)6·· 1x 2 3 2 1 x 1 14·· 5··12··10··1 x 1 1x 2 192····18··Possible work:1x 2 6 2 1 x 1 1101210·········18···1 x 1 1x 2 192····6 x2 6 2 2 x1 1102410·········18···24···4 x2 510···18···1x 2 12··6··4··1 x1 2 x2 1182·····24···3 x2 12··1 (x 2 3)6··1 (x 3)6··All three expressions are equivalent.12 Explain a different method you could use to solve problem 11.Possible answer: I could have expanded 1 (x 2 3) into 1 x 2 1 in the first662······expression. Then I could combine like terms in the second and thirdexpressions and skip the factoring step, to show that all three expressionsare equivalent to 1 x 2 1 .6··2·· Curriculum Associates, LLC Copying permitted for classroom use. 2020 Curriculum Associates, LLC. All rights reserved.GRADE 7LESSON 15Page 2 of 227

FLUENCY AND SKILLS PRACTICELESSON 16Name:Teacher PacketUnderstanding Representing a Situation withDifferent ExpressionsComplete the problems by rewriting algebraic expressions.1Goby fish and shrimp naturally live close together. A pet store is selling bagsof goby fish and shrimp to aquarium hobbyists. Each goby fish costs 15, andeach shrimp costs 10. Each bag has an equal number of goby fish and shrimp.a. The pet store models the cost per bag with the expression x(15 1 10). Explainwhat the expression represents.Possible answer: The expression (15 1 10) shows the cost of one fish andthe cost of one shrimp. The variable x represents the number of fish andthe number of shrimp in each bag. The sum of the two costs is multipliedby the number of fish and shrimp in each bag.b. What other expression can you use to model the cost? Explain what theexpression represents.Possible answer: 25x; The expression shows the total cost for a bag thatcontains x fish and shrimp.2Ms. Ghandi runs 1 mile each morning and 1 mile each evening. She also does10 push-ups each morning and each evening.a. Ms. Ghandi writes the two expressions 2(m 1 10p) and 2m 1 20p. Explain howeach expression represents how much she exercises.Possible answer: 2(m 1 10

Grade 7 Mathematics Teacher At-Home Activity Packet The At-Home Activity Packet includes 19 sets of practice problems that align to important math concepts that have likely been taught this year. Since pace varies from classroom to classroom, feel free to select the pages that align with the topics your students have covered.File Size: 866KBPage Count: 31Explore furtherGrade 7 math worksheets with answerswww.onlinemath4all.comI-ready Grade 7 Math Answer Keyacpsf.orgGrade 7 Maths Problems With Answerswww.analyzemath.comUnit 7 Practice Problems - Answer Key - RUSD Mathrusdmath.weebly.comGrade 7 - Ready Common Core - Google Searchsites.google.comRecommended to you b