Mathsheets
Printable math worksheets for teachers and families
Name
Date
Time
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Add & Subtract within 1000: Strategies — Make a Hundred
Use the strategy shown to add or subtract. Fill in each blank.
Example
203 + 638
Round 203 down to 200: 200 + 638 =
838
Now add 3:
841
1.
203 + 461
Round 203 down to 200: 200 + 461 =
Now add 3:
2.
398 + 454
Round 398 up to 400: 400 + 454 =
Now subtract 2:
3.
202 + 246
Round 202 down to 200: 200 + 246 =
Now add 2:
4.
301 + 667
Round 301 down to 300: 300 + 667 =
Now add 1:
5.
599 + 155
Round 599 up to 600: 600 + 155 =
Now subtract 1: