Grade
1

Same & Different: Tens & Ones

Look at the two pictures. What do you notice?

A. shows 2 towers of 10 cubes. Each has 5 red and 5 blue cubes. It also shows 3 single red cubes. B. shows 4 towers of 10 cubes. Each has 5 red and 5 blue cubes. It also shows 3 single red cubes.
  1. How are pictures A and B mathematically the same, and how are they different?
    • A and B are the same because …
    • A and B are different because …
  2. Make a third picture with tens and ones. Explain how your picture is the same as pictures A and B, and how it is different.
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Reference for Educators

Sample problems and solutions