Estimate products
Learn with an example
😀 Estimate the product. Round each factor to the nearest ten, then multiply.
25 × 21
The product is approximately ________.
Round the first factor to the nearest ten.
Round the second factor to the nearest ten.
Now multiply:
30 × 20 = 600
The product is approximately 600.
Compare your estimate to the exact answer:
25 × 21 = 525
😀 Estimate the product. Round each factor to the nearest ten, then multiply.
36 × 76
The product is approximately _______.
Round the first factor to the nearest ten.
Round the second factor to the nearest ten.
Now multiply:
40 × 80 = 3,200
The product is approximately 3,200.
Compare your estimate to the exact answer:
36 × 76 = 2,736
😀 Estimate the product. Round each factor to the nearest ten, then multiply.
35 × 59
The product is approximately ________.
Round the first factor to the nearest ten.
Round the second factor to the nearest ten.
Now multiply:
40 × 60 = 2,400
The product is approximately 2,400.
Compare your estimate to the exact answer:
35 × 59 = 2,065
Let’s practice!
