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Unit 1 Module 2Answer KeySession 2NAME DATEFactors & Tea Lights page 2 of 25Write the missing parts on this number line:3 721683 243 93 27103 113 33301236Tea light candles are being packaged 6 to a box. Fill in the table:Number of Boxes45678910Total Number ofCandles24303642485460For the problems below, use numbers, words, or labeled sketches to explain your answers.7Jane has 7 tea light candles. Aisha has 5 times more candles than Jane. How manycandles does Aisha have?35 candles8Theo has 50 tea light candles. Madeline has half as many candles as Theo. Howmany candles does Madeline have?25 candlesBridges in Mathematics Grade 4 Home Connections8 The Math Learning Center mathlearningcenter.org

Unit 1 Module 2Answer KeySession 4NAME DATEMultiplication Fact Strategies page 1 of 2Doubles Plus One Set FactsWhen one of the factors is 3, you can think about the Doubles fact, and then add one more set of thenumber being doubled. For example, 6 3 is 6 doubled (12) plus one more set of 6.3 6 (2 6) 612 6 187 3 (7 2) 1414 7 21You can use this strategy with larger numbers, too:3 25 1(2 25) 2550 25 75150 3 300 150 450Shade in the areas and complete the equations.3 5 152(2 150) 1503 8 24If you had 2 boxes of 8 crayons and your teacher gave you another box of 8 crayons,how many crayons would you have?24 crayons3Cody bought 2 bags of 5 apples. He already had 1 bag of 5 apples at home. Howmany apples does Cody have in all?15 apples4Write a story problem for a Doubles Plus One Set ( 3) fact.Work will vary.(continued on next page)Bridges in Mathematics Grade 4 Home Connections9 The Math Learning Center mathlearningcenter.org

Answer KeySession 4Unit 1 Module 2NAME DATEMultiplication Fact Strategies page 2 of 2Tens Facts5Circle the groups of 10 in the arrays below, and solve the equations.707 10 9010 9 When you understand place value, multiplying larger numbers by 10 can be easy, too.10 25 250670 10 6700Half-Tens FactsWhen one of the factors is 5, you can multiply the other factor by 10 and then divide the answer in half.6Fill in the blanks below.Half-Tens Facts5 6 307896 10 60Half of 60 is30n 10 512345610203040506051015202530Max had 6 dimes in his pocket. How much money did he have?60 Jose had 7 nickels in his pocket. How much money did he have?35 If Suzie bought 9 baskets with 5 large peaches in each basket, how many peachesdid she buy?45 peachesBridges in Mathematics Grade 4 Home Connections10 The Math Learning Center mathlearningcenter.org

Unit 1 Module 2Answer KeySession 6NAME DATEMultiplying by 8 & 9 page 1 of 21Circle all the Double-Double-Doubles facts ( 8) in blue. Then solve them and use aregular pencil to write each product.2Circle all the Tens Minus One Set facts ( 9) in red. Then solve them and use aregular pencil to write each product.6 97 87 95 854365663403 94 89 68 89 9273 a9 432546481Pick one fact from above and write it here: .Work will vary.bColor in the array for that fact on the grid below.cLabel the array to show how you found the product, and use equations orwords to explain your work.Work will vary.(continued on next page)Bridges in Mathematics Grade 4 Home Connections11 The Math Learning Center mathlearningcenter.org

Unit 1 Module 2Answer KeySession 6NAME DATEMultiplying by 8 & 9 page 2 of 24Shade in and label the arrays of two more Double-Double-Double facts in the gridsbelow. Write an equation for each fact.Work will vary.5Shade in and label the arrays of two more Tens Minus One Set facts in the gridsbelow. Write an equation for each fact.Work will vary.Bridges in Mathematics Grade 4 Home Connections12 The Math Learning Center mathlearningcenter.org

Unit 1 Module 3Answer KeySession 2NAME DATEMultiples, Flowers & Cards page 1 of 212When you count by a number, you are naming the multiples of that number. Forexample, if you skip-count by 5s, you are naming the multiples of 5: 5, 10, 15, 20, 25,and so on. In each sequence below, fill in the missing multiples.ex20 25, 30,355, 10, 15, ,a9 12, 15, 18, ,21 243, 6, ,b6, ,12 18, ,24 30c9, 18, ,27 36, 45, ,54 63Circle all the multiples of the number in each 19ace2567814 21 10722 33 21 14 16 42 35321 35 18 36 44 12 29Fill in the missing numbers. 9 93 94 42 67 881271612563769314 530 4366 26 46 86 166 3212244896192824 2 412(continued on next page)Bridges in Mathematics Grade 4 Home Connections13 The Math Learning Center mathlearningcenter.org

Unit 1 Module 3Answer KeySession 2NAME DATEMultiples, Flowers & Cards page 2 of 24Four friends were making cards to sell at the holiday sale. Each friend made 9 cards.They put all their cards together and then bundled them in groups of 6 cards to sell.How many bundles of 6 cards did they make? Show all your work.6 bundles5Zack measured a rectangular garden at the park. The longer sides eachmeasured 15 feet and were 3 times longer than the shorter sides. If Zack walked allthe way around the garden, how far did he walk?CHALLENGE40 feetBridges in Mathematics Grade 4 Home Connections14 The Math Learning Center mathlearningcenter.org

Answer KeySession 4Unit 1 Module 3NAME DATEArrays & Factors page 1 of 21Draw and label a rectangular array to show two factors for each number. Do not use 1 asa factor. Then write the fact family that goes with each array that you draw.exa 16Work will vary.Example:84822484288 4 28 2 4 332 2b 18Work will vary.Example: 62 8 163 6 188 2 166 3 1816 8 218 6 316 2 818 3 6List all the factors of each number below.ex12b17d91, 2, 3, 4, 6, 121, 171, 3, 9Circle the prime number(s) in problem 2.aa16c24e361, 2, 4, 8, 161, 2, 3, 4, 6, 8, 12, 241, 2, 3, 4, 6, 9, 12, 18, 3617Draw a square around the square number(s) in problem 2.9, 16, 36(continued on next page)Bridges in Mathematics Grade 4 Home Connections15 The Math Learning Center mathlearningcenter.org

Unit 1 Module 3Answer KeySession 4NAME DATEArrays & Factors page 2 of 24Is the number 25 prime or composite? How do you know?Composite. Work will vary, Example: it has 3 factors. 1, 5, 25.5Judy has a collection of 30 stamps. She can divide the stamps into 2 equal groups of 15stamps. What are two other ways she could divide the stamps into equal groups?Work will vary, Example:3 groups of 10 (or 10 groups of 3)5 groups of 6 (or 6 groups of 5)15 groups of 26Judy’s brother Sam has a collection of 96 comic books. What are the tenways Sam could divide his comic books into equal groups?CHALLENGE2 groups of 48 (48 groups of 2)3 groups of 32 (32 groups of 3)4 groups of 24 (24 groups of 4)6 groups of 16 (16 groups of 6)8 groups of 12 (12 groups of 8)Bridges in Mathematics Grade 4 Home Connections16 The Math Learning Center mathlearningcenter.org

Unit 1 Module 4Answer KeySession 1NAME DATEMeasuring Lengths page 1 of 212Would you use centimeters or meters to measure the length ofametersyour bedroom?bcentimetersyour big toe?cmetersa car?da mouse? centimetersethe gym? metersFill in the table below to convert between centimeters and meters. The first 2 rowsare done for you.centimeters (cm)meters (m)100 cm200 cm300 cm1m2m800 cm2500 cm3100 cm33m8m25 m31 mFor each of the following story problems, show your work using numbers, labeledsketches, or words. Write an equation, including the answer labeled with the correctunits, to represent your work.aChloe is a baby who is 24 inches tall. Her father is 3 times as tall as she is. Howmany inches tall is Chloe’s father?72 inches24 inches 3 72 inches(continued on next page)Bridges in Mathematics Grade 4 Home Connections17 The Math Learning Center mathlearningcenter.org

Unit 1 Module 4Answer KeySession 1NAME DATEMeasuring Lengths page 2 of 2bChloe’s dog, Wilson, is 27 inches long. Chloe’s hammock is 4 times as long asWilson. How many inches long is the hammock?108 inches27 inches 4 108 inches4A small table is 2 feet by 3 feet. A large table is twice as long and twice aswide as the small table. What is the area of the large table in square feet?CHALLENGE24 sq. ft.Bridges in Mathematics Grade 4 Home Connections18 The Math Learning Center mathlearningcenter.org

Unit 1 Module 4Answer KeySession 3NAME DATEMass & Volume Story Problems page 1 of 2For each problem, show your thinking with numbers, sketches, or words. Then write anequation that represents your work.1DJ and Tyler are watering plants. DJ uses 18 liters of water. Tyler uses 5 times asmuch water. How much water does Tyler use?18 liters 5 90 liters90 litersEquation2Answer, labeled with correct unitsChris and Jocelyn are building a patio out of bricks. Chris uses 23 kilograms ofbricks. Jocelyn uses 6 times as many kilograms. How many kilograms of bricksdoes Jocelyn use?23 kg 6 138 kg138 kgEquation3Answer, labeled with correct unitsThe mass of one bouncy ball is 14 grams. Tracy has 8 bouncy balls. What is themass of all 8 bouncy balls?14 g/ball 8 balls 112 g112 gramsEquation45Answer, labeled with correct unitsTrue or False?aTA liter is 1,000 times as much as a milliliter.bA gram is 300 times smaller than a kilogram.FcFThere are 99 centimeters in a meter.Fill in the bubble to show which unit you would use to measure the amount of waterin a very large inued on next page)Bridges in Mathematics Grade 4 Home Connections19 The Math Learning Center mathlearningcenter.org

Unit 1 Module 4Answer KeySession 3NAME DATEMass & Volume Story Problems page 2 of 267Fill in the bubble to show which unit you would use to measure the mass of a mouse.!centimeter!!gramliter!kilogramAnna has 15 stickers. Rosa has 3 times as many stickers as Anna. Dawnhas 3 times as many stickers as Rosa. Sara has 17 fewer stickers than Dawn.CHALLENGEaHow many stickers does Rosa have? Show your work.45 stickersbHow many stickers does Dawn have? Show your work.135 stickerscHow many stickers does Sara have? Show your work.118 stickersBridges in Mathematics Grade 4 Home Connections20 The Math Learning Center mathlearningcenter.org

Unit 2 Module 1Answer KeySession 2NAME DATEMeasuring in Centimeters page 1 of 3Note to FamiliesThis Home Connection asks students to measure common items at home in centimeters. If you have a ruler or tape measureat home marked in centimeters, have your child use it. If not, you can cut out the strips below and tape or glue themtogether to create a measuring tape.Measuring in CentimetersFind a ruler or tape measure that is marked in centimeters. You can also cut out thestrips below and tape or glue them together to make your own measuring tape.2By yourself or with a family member or two, measure the items listed on theworksheet and record your 1525354555657585960glue or tape glue or tape glue or tape glue or tape glue or tape1(continued on next page)Bridges in Mathematics Grade 4 Home Connections21 The Math Learning Center mathlearningcenter.org

Answer KeyBridges in Mathematics Grade 4 Home Connections22 The Math Learning Center mathlearningcenter.org

Unit 2 Module 1Answer KeySession 2NAME DATEMeasuring in Centimeters page 2 of 3Please measure the following objects in centimeters and record the results.Object To Be Measured1width of your bed2width of a doorMeasurement in CentimetersWork will vary, example:102 cmWork will vary, example:104 cm3height from thefloor to the seatof your favorite chair4length of a telephoneor cell phone5dimensions of yourfavorite book (lengthand width)6width of your refrigeratorWork will vary, example:46 cmWork will vary, example:15 cmLorettalsand PaWork will vary, example:14 cm 21 cmWork will vary, example:102 cm7dimensions of a towel(length and width)8length of yourtoothbrushWork will vary, example:75 cmWork will vary, example:19 cm(continued on next page)Bridges in Mathematics Grade 4 Home Connections23 The Math Learning Center mathlearningcenter.org

Answer KeySession 2Unit 2 Module 1NAME DATEMeasuring in Centimeters page 3 of 3Locate objects at home that are about 6 cm and 80 cm long or tall. Record the name ofthe object below.Approximate LengthObject You Found12Work will vary, example: door keyWork will vary, example: bedside table3about 6 cm long or tallabout 80 cm long or tallJasmine is making cookies for the fourth grade class. The recipe calls for 8 ouncesof chocolate chips. She needs to triple the recipe to have enough for everyone, andshe is going to add 2 more ounces of chocolate chips to the tripled batch to makethe cookies extra delicious. How many ounces of chocolate chips does she need?aUse numbers, labeled sketches, or words to solve the problem. Show your work.26 ouncesbFill in the bubble beside the equation that best represents this problem. (Theletter c stands for ounces of chocolate chips.)!48 3 2 c!(8 3) 2 c!(8 3) – 2 cJasmine can fit 12 cookies on a cookie sheet. She needs 6 times that many cookiesfor the whole fourth grade. Jasmine also wants to have 2 cookies for each of the 4teachers. How many cookies does Jasmine need to make? Show your work.80 cookies5When 2 pieces of rope are placed end-to-end, they measure 40 metersin length. When the 2 pieces are laid side-by-side, one is 10 meters longer than theother. How long is each piece of rope? Show your work.15m and 25m. Work will vary. Example: if you take off the extra 10m, the totalis 30 m, so each lengh is the same: 15m. That means the shorter one is 15 cmand the longer one is 25m.15 m10 mCHALLENGE30 m total, 15 m each.Bridges in Mathematics Grade 4 Home Connections24 The Math Learning Center mathlearningcenter.org

Answer KeySession 4Unit 2 Module 1NAME DATEMore Multiplying by Ten page 1 of 21For each rectangle below, label the dimensions, find the area, and write an equationto describe the array.Labeled ArrayexAreaMultiplication Equation60 sq.units6units 10 units 60 sq. units80 sq.units8 units 10 units 80 sq. units70 sq.units7 units 10 units 70 sq. units130 sq.units10 units 13 units 130 sq. units106a108b107c10310(continued on next page)Bridges in Mathematics Grade 4 Home Connections25 The Math Learning Center mathlearningcenter.org

Answer KeySession 4Unit 2 Module 1NAME DATEMore Multiplying by Ten page 2 of 22Write a multiplication equation or story problem in each empty box to complete the table.Story ProblemsexabMultiplication EquationSarah has 5 dimes. How much money does she have?5 10 50 James has 12 dimes in his pocket. How much moneydoes he have?12 10 120 or 1.2016 10 160 or 1.60Larry had 16 dimes in his collection of old coins.How much money does he have?cd3Work will vary. Example:Alex has 30 dimes. How much moneydoes he have?10 30 3.00Work will vary. Example:Eloise found 21 dimes while cleaningthe house. How much money didshe find?21 10 2.10Dana has only nickels in her hand, and Ajah has exactly the samenumber of dimes and no other coins. Together they have a total of 90 . How manycoins is each person holding? Show your work below.CHALLENGE6 coins each. Work will vary, example:# of coins9456Bridges in Mathematics Grade 4 Home Connectionsnickels45 20 25 30 26dimes90 40 50 60 The Math Learning Cen

Bridges in Mathematics Second Edition Grade 4 Home Connections Volumes 1 & 2 The Bridges