3.3.F.20-Use place value strategies and the associative property n × (m × 10) = (n × m) × 10 (where n and m are less than 10) to multiply multiples of 10-Exit Ticket

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3 questions

Place parentheses in the equations to find the related facts. Then, solve.

Jamila solves 20 x 5 by thinking about 10 tens. Explain her strategy.

From EngageNY.org of the New York State Education Department. Grade 3 Mathematics Module 3, Topic F, Lesson 20. Internet. Available from https://www.engageny.org/resource/grade-3-mathemat...; accessed 21/Oct/2015.