IXL | Estimate quotients: 2-digit divisors

Which expression will give a better whole-number estimate for

139

140

Use the expression you picked to estimate the quotient.

139

is about

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Learn with an example

question

Which expression will give a better whole-number estimate for

809

800

810

Use the expression you picked to estimate the quotient.

809

is about

solution

You want to find which expression will give a better estimate for

809

Look at

810

810 is close to 809, and 90 is close to 89. 810 can be easily divided by 90. So,

810

is a good way to estimate

809

Look at

800

is also easy to divide. 800 is close to 809, but 40 is very far away from 89.

So,

810

is a better way to estimate.

Now, use

810

to estimate the quotient.

Use basic division facts and division patterns to help you.

810

So,

809

is about

Looking for more? Try these:

Lesson: Estimating quotients

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Teacher tools

Work it out

Not feeling ready yet? These can help:

J.3Division facts to 12

E.2Divide numbers ending in zeros

C.2Rounding: up to millions place

Lesson: Estimating quotients

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