Multiplying by Tens
Mathematics · Multiplication & Division · procedural
Multiply one-digit whole numbers by multiples of 10 in the range 10–90 using strategies based on place value and properties of operations
What mastery looks like
- Calculate 7 × 30 = 210 by reasoning 7 × 3 tens = 21 tens = 210
- Explain why multiplying by a multiple of 10 adds a zero to the product
- Use this skill to estimate products of larger numbers
Check your understanding
Can Multiplying by Tens quickly work out '7 × 40' or '6 × 80' by first doing the single-digit multiplication and then placing the zero — getting 280 and 480?
Prerequisites
Required first
Helpful
Unlocks (0 directly)
None.