Grade 5

Read the Headline Story to the students. Encourage them to think of creative ways to name solutions.

A number is less than 20 and can be written as a product of 4 whole numbers, each greater than 1. What is the number?

- 16
- 2 × 2 × 2 × 2 = 16 so maybe the number is 16.
- 2 × 2 × 2 × 3 is more than 20, so the number must be 16.
- 2 is a prime number.

This work is licensed under a

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.