Samantha s Strategies page 1 of 2

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1 Unit 1 Module 2 Session 3 Smnth s Strtegies pge 1 of 2 Smnth hs been working with vriety of multiplition strtegies. 1 Write n expression to desribe eh of the sttements Smnth mde. To solve 18 20, I find double 18 nd then multiply by 10. b To solve 16 18, I double nd hlve. To solve 31 8, I find 3 8, multiply by 10, nd then dd 1 group of 8. 2 Evlute the three expressions bove (in other words, solve the problems). b 3 Fill in the blnks. (5 3) = 60 b 4 ( 9) = 72 7 ( 2 ) = 42 d ( 5) 5 = 75 e (3 3) = 27 (ontinued on next pge) Bridges in Mthemtis Grde 5 Home Connetions 7 The Mth Lerning Center mthlerningenter.org

2 Unit 1 Module 2 Session 3 Smnth s Strtegies pge 2 of 2 4 True or Flse? 9 9 = (10 10) 1 b 7 21 = (20 7) + (1 7) = 10 (16 2) d 8 13 = 2 52 e 6 18 = (6 20) (6 2) 5 Willim needs box to hold his golf bll olletion. He found box tht n fit 8 lyers with 14 blls in eh lyer. How mny golf blls n this box hold? Show your work. 6 Willim found different box in his grge. The lbel outside sid it would hold 120 golf blls. If 24 blls fit in eh lyer, how mny lyers tll is the box? Show your work. 7 CHALLENGE Willim hs totl of 292 golf blls in his olletion. Write n eqution to show how mny golf blls re left if Willim fills the two boxes desribed in problems 5 nd 6 bove. b Wht re the dimensions of two different boxes tht Willim ould use to store the rest of his olletion? Show your work. Bridges in Mthemtis Grde 5 Home Connetions 8 The Mth Lerning Center mthlerningenter.org

3 Unit 1 Module 2 Session 5 Finding Ftors pge 1 of 2 1 Find ll the ftors of eh of the numbers below. ex 15: 1, 3, 5, 15 21:,,, b 28:,,,,, 42:,,,,,,, d 60:,,,,,,,,,,, 2 Find t lest three multiples for eh number below. ex 15: 30, 45, 60 21:,, b 25:,, 35:,, d 42:,, 3 List ll the ftors of 36. b How do you know you hve listed them ll? 4 Milo is tlking to his sister Lis bout ftors. He sid he thinks tht ny even number lwys hs more ftors thn ny odd number. Lis sid she doesn't gree with him. Explin who you gree with nd why. (ontinued on next pge) Bridges in Mthemtis Grde 5 Home Connetions 9 The Mth Lerning Center mthlerningenter.org

4 Unit 1 Module 2 Session 5 Finding Ftors pge 2 of 2 ex Wht ftors do 12 nd 24 hve in ommon? 1, 2, 3, 4, 6, 12 5 Wht ftors do 8 nd 12 hve in ommon? 6 Wht ftors do 6 nd 4 hve in ommon? ex Wht re two multiples tht 5 nd 6 hve in ommon? 30, 60 7 Wht re two multiples tht 4 nd 8 hve in ommon? 8 Wht re two multiples tht 5 nd 7 hve in ommon? 9 CHALLENGE Hun is redesigning his bedroom, whih is the shpe of retngle. Hun knows the re of his bedroom is 180 squre feet. Wht re ll the possible whole number dimensions of Hun s bedroom? b Whih dimensions re the most likely dimensions for Hun s bedroom? Why? Bridges in Mthemtis Grde 5 Home Connetions 10 The Mth Lerning Center mthlerningenter.org

5 Unit 1 Module 3 Session 1 Piper s Ping-Pong Tem pge 1 of 2 Piper is the ptin of her shool s ping-pong tem. Help Piper keep trk of the tem s equipment. Show your work using numbers, lbeled skethes, or words. 1 Piper brought this box of ping-pong blls to prtie on Tuesdy. How mny ping-pong blls does the box hold if one ping-pong bll fits in 1 unit 1 unit 1 unit spe? b How muh rdbord does it tke to mke the box? 2 Piper needs to buy 320 new ping-pong blls for the tem. Ping-pong blls ome in sets of 16. How mny sets of ping-pong blls should Piper buy? b If one set of 16 ping-pong blls osts $8, how muh will 320 ping-pong blls ost? (ontinued on next pge) Bridges in Mthemtis Grde 5 Home Connetions 11 The Mth Lerning Center mthlerningenter.org

6 Unit 1 Module 3 Session 1 Piper s Ping-Pong Tem pge 2 of 2 3 Piper sw lrge box of ping-pong blls with 48 blls in eh lyer. If the box hs 5 lyers, how mny blls n the box hold? b If the box hs 15 lyers, how mny blls n the box hold? 4 Is the eqution true or flse? = (20 15) (7 15) b = (40 10) + (40 8) + (5 10) + (5 8) = (100 31) (1 31) d = Write n expression for eh item below. ex To find 12 times 17, I multiply 10 times 17 nd 2 times 17 nd dd the two produts together. (10 17) + (2 17) To find 79 times 24, I multiply 80 times 24 nd tke off one group of 24. b To find 12 times 13, I double 13 nd hlve 12 nd then multiply. CHALLENGE To find 1,188 divided by 12, I think bout 1,200 divided by 12 tht s 100 groups of 12. 1,188 hs 1 fewer group of 12. Bridges in Mthemtis Grde 5 Home Connetions 12 The Mth Lerning Center mthlerningenter.org

7 Unit 2 Module 3 Session 1 Using Rtio Tble pge 1 of 2 1 Use rtio tble to multiply the numbers. ex b d 4 18 e (ontinued on next pge) Bridges in Mthemtis Grde 5 Home Connetions 31 The Mth Lerning Center mthlerningenter.org

8 Unit 2 Module 3 Session 1 Using Rtio Tble pge 2 of 2 2 True or Flse? = (100 34) (2 34) b = Veroni hs to multiply She sys she n multiply nd then tke wy one group of 18. Do you gree with Veroni? Explin. b Write n expression tht shows Veroni s thinking. Wht is ? Show your work. 4 CHALLENGE The qurium hs 198 fish tnks with 15 fish in eh. They lso hve 297 tnks with 12 rustens in eh. Does the qurium hve more fish or more rustens? How mny more? Mke n estimte nd explin your resoning. Then determine the tul nswer. Estimte nd resoning: b Atul nswer: (Show your work.) Is your nswer resonble? (Think bout your estimte.) Bridges in Mthemtis Grde 5 Home Connetions 32 The Mth Lerning Center mthlerningenter.org