Sprint 23 · Chapter 3

Multiplying Orally

The student multiplies by round numbers in the head, and works backwards to find a missing round factor.

1. 1Multiplying by Round Numbers
2. 2When the Other Number Is Bigger
3. 3Three Done in the Head
4. 4Find the Product Orally
5. 5Working It Backwards
6. 6Fill in the Blanks