Grade

5

# Guess My Rule: Multiplication Madness

- There are rules to decide what equations belong in the circles. Solve the equations to help find the rules. What is the rule to be in the red circle? What is the rule to be in the blue circle?
- What is the rule to be in the intersection of both circles?
- What is another expression that belongs in only the red circle?
- What is another expression that belongs in only the blue circle?

Start by finding the products of 91 × 11 in the red circle, 499 × 2 in the blue circle and 333 × 3 in the intersection of the circles. How are those products similar? How are they different?

Make your own rule involving multiplication. You can use the circles below or draw your own. If possible, show some examples that belong inside each circle and some examples that don’t belong in either circle.

Printable Version

Google doc for printing and copying

Reference for Educators

Sample problems and solutions