Grade
2

Guess My Rule: What’s the Amount?

Inside the circle: 10 + 5 + 5. 17 + 3. 25 − 5. A set of 4 nickels. Two 10-frames, one with 10 red dots and the other with 4 red dots and 6 yellow dots. Outside of the circle: 15 + 3. 20 − 5. 5 + 5 + 5. A set with 3 nickels and 1 penny. Two 10-frames, one with 10 red dots and the other with 8 yellow dots.
  1. Some items belong in the circle, and some do not.
    What is the rule to decide what belongs in the circle?
  2. Write or draw at least one more example that belongs inside the circle.
  3. Write or draw at least one more example that belongs outside the circle.
  • Make your own rule, using addition, subtraction, and pictures.
    You can use the circle below or draw your own.
  • Write some examples that belong inside your circle and some examples that belong outside your circle.
a blank circle for your own rule
Printable Version

Google doc for printing and copying

Reference for Educators

Sample problems and solutions