Grade
1

Same & Different: Related Numbers

Look at the two pictures. What do you notice?

A: Triangle with black 40 in the top corner, red 10 in the bottom right corner, and red 30 in the bottom left corner. B: Triangle with black 32 in the top corner, a red question mark in the bottom right corner, and red 22 in the bottom left corner.
  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 of a fact family triangle. Explain how your picture is the same as pictures A and B, and how it is different.
Printable Version

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Reference for Educators

Sample problems and solutions