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Estimating Differences

Estimating Differences Lesson & Worksheet - My Schoolhouse - Online Learning
 

You can estimate to find out "about how many" when subtracting as well as when adding.  This is also called rounding.

You can estimate the differences of two-digit and three-digit numbers.

Look at the examples below.

 

77 Rounds to 80
31 Rounds to -  30
50

 

The estimated difference of 77 - 31 is 50.

 

459 Rounds to 500
287 Rounds to -  300
200

 

The estimated difference of 495 - 287 is 200.

 

Practice estimating the difference with two-digit and three-digit numbers.

 

67 Rounds to   52 Rounds to
-  32 Rounds to -  26 Rounds to
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467 Rounds to 345 Rounds to
-  159 Rounds to -  189 Rounds to
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81 Rounds to 47 Rounds to
-  32 Rounds to -  16 Rounds to
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269 Rounds to 666 Rounds to
-  115 Rounds to -  421 Rounds to
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27 Rounds to 94 Rounds to
-  11 Rounds to -  37 Rounds to
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525 Rounds to 813 Rounds to
-  210 Rounds to -  199 Rounds to
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38 Rounds to 73 Rounds to
-  26 Rounds to -  19 Rounds to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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