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In this lesson, we will learn how to estimate the products of one-digit numbers by two- or three-digit numbers.
Q1:
We can estimate to check our work.
Estimate 8 3 × 4 by rounding 83 to the nearest ten.
Find the product.
Check that your answer is reasonable using your estimate.
Q2:
Look at how Olivia estimated the product by rounding the three-digit number to the nearest hundred.
Use her method to estimate 7 9 2 × 5 .
Use her method to estimate 2 5 3 × 9 .
Q3:
Estimate 2 6 9 × 6 by rounding 269 to the nearest hundred.
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