In this Grade 5 lesson from enVision Mathematics Chapter 5, students learn how to select and apply different division strategies — including estimation, area models, and partial quotients — to solve multi-digit division problems. Using real-world contexts such as distributing items into bins and cartons, students practice dividing four-digit numbers by one- and two-digit divisors while checking answers for reasonableness.
Section 1
Finding Compatible Numbers
To set up a division problem for estimation, change the original problem into an approximate problem .
First, round the divisor to the nearest ten to get .
Then, find a compatible number by choosing a multiple of that is close to the original dividend .
Section 2
Using Estimation to Check Reasonableness
To assess reasonableness, round the numbers in the problem to nearby, easy-to-work-with values. Then, perform the same two steps of the problem using these rounded numbers. The result of your estimation should be close to your calculated answer.
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Section 1
Finding Compatible Numbers
To set up a division problem for estimation, change the original problem into an approximate problem .
First, round the divisor to the nearest ten to get .
Then, find a compatible number by choosing a multiple of that is close to the original dividend .
Section 2
Using Estimation to Check Reasonableness
To assess reasonableness, round the numbers in the problem to nearby, easy-to-work-with values. Then, perform the same two steps of the problem using these rounded numbers. The result of your estimation should be close to your calculated answer.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter