MULTIPLICATION ESTIMATION

Estimate products by rounding to check answers and solve real-life problems.

L5L6

CS.N.4.3·Estimating and verifying results(IV)

Section 1 / 3

ROUNDING TO ESTIMATE PRODUCTS

Round one or both factors to the nearest ten, then multiply. For 29 x 4: round 29 > 30, compute 30 x 4 = 120. The exact answer (116) is close. Fast and useful!

Estimate 29 x 4

1Round 29 > 30

230 x 4 = 120

3Exact: 29 x 4 = 116 (close!)

= 116

LEADER TIP

Estimation is a life skill. Connect to real examples: 'About how much would 29 books at £8 each cost?'

BEFORE THIS LESSON, TRY

Multi-Digit Multiplication

PRACTICE WITH THESE GAMES

Guess the Number

Math Bingo

Multiplication Quiz

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MULTIPLICATION ESTIMATION

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MULTIPLICATION ESTIMATION