Unit 1 lesson 5 practice problems grade 7 July 8, 2019 16 32 64 128 Unit 1 lesson 5 practice problems answer key grade 7 Illustrative mathematics grade 7 unit 1 lesson 5 practice problems Unit 1 lesson 7 practice problems 6th grade 7th grade math unit 1 lesson 5 practice problems Unit 5 lesson 7 grade 8 Unit 5 lesson 1 grade 8 Unit 7 class 5 english