To solve 7 - 6, Ben thinks you should count back, and Pat thinks you should
count on. Which is the best way to solve this expression? Make a simple math
drawing to show why.
From EngageNY.org of the New York State Education Department. Grade 1 Mathematics Module 1, Topic G, Lesson 27. Internet. Available from https://www.engageny.org/resource/grade-1-mathemat...; accessed 20/July/2015.
