Estimating Quotients
Lesson

Topic Index | Grade 5 Math | Intermediate Test Prep | StudyZone

Estimate is to find an answer that is close to the exact answer.

Estimate quotients before you divide.

Find where the quotient begins.

Estimate: 161 5.

Try:

dividing hundreds
161 5   5 > 1 not enough hundreds

 

161 5   5 < 16 enough tens

So, 

the quotient begins in the tens place.

Since you are estimating, write zeros for the other digits.

 

Estimate: 34.2 5.

Think:

What number times 5 has a product close to 34.2?
? x 5 = 30
6 x 5 = 30

So,  

34.2  5 is about 6.

 

Estimate: 295 7.

Think:

What number times 7 has a product close to 29?
? x 7 = 28
4 x 7 = 28

So,  

29 7 is about 4

Therefore,

 

Remember: Think of basic division facts, such as 25 5 = 5 and 20 5 = 4. Using basic facts to estimate makes the problem easier to solve.

Let's Practice

 
Topic Index | Grade 5 Math | Intermediate Test Prep | StudyZone

Created by Carol A. Carroll
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