Grade
2

Same & Different: Counting Collections

Look at the two pictures. What do you notice?

A: 3 hundreds, 2 rows of 5 tens plus 3 more tens, and 7 sets of 5 ones in number pieces. The ones look like the dots on dice. B: 3 sets of 5 ones, 5 tens, and 4 hundreds in number pieces.
  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 that uses number pieces to represent a number. Explain how your picture is the same as pictures A and B, and how it is different.
Printable Version

Google doc for printing and copying

Reference for Educators

Sample problems and solutions