Question

Use the pictures of cubes shown to solve a subtraction problem. What number do the cubes show? 

   Use the pictures of cubes shown to solve a subtraction problem.

What number do the cubes show?
MathScape: Seeing and Thinking Mathematically, Course 2, The Language of Algebra, Student Guide
MathScape: Seeing and Thinking Mathematically, Course 2, The Language of Algebra, Student Guide
McGraw-Hill 1st Edition
Chapter 3, Problem 4 ↓

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Assume each cube represents one unit. Let's say there are \( a \) cubes in the first picture.  Show more…

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Use the pictures of cubes shown to solve a subtraction problem. What number do the cubes show?
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