3.3.C.12-Apply the distributive property and the fact 9 = 10 – 1 as a strategy to multiply-Exit Ticket

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2 questions

Each cube has a value of 9. Complete the equations below to find the total value of the tower of cubes.

Hector solves 9 × 8 by subtracting 1 eight from 10 eights. Draw a model to explain Hector’s strategy.

From EngageNY.org of the New York State Education Department. Grade 3 Mathematics Module 3, Topic D, Lesson 12. Internet. Available from https://www.engageny.org/resource/grade-3-mathemat...; accessed 21/Oct/2015.