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In this lesson, we will learn how to use rounding and compatible numbers to estimate sums and differences of numbers up to six digits.
Students will be able to
Q1:
Estimate 434,528−285,174 by rounding the two numbers to the nearest hundred thousand.
Q2:
The population of Delaware, a state in the United States, was 976,171 in 2018 and 876,794 in 2008. Estimate the increase of the population between the 2 years by rounding the two numbers to the nearest thousand.
Q3:
Estimate the result of the following by rounding both numbers to the nearest thousand: 213242+33531
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