Mental Addition Strategies Practice
Name: _______________________________
Date: _______________________________
Strategy 1: Rounding and Compensating
Round one number to make it easier, then adjust your answer.
1.
47 + 29 =
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2.
156 + 98 =
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3.
234 + 199 =
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4.
485 + 297 =
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Strategy 2: Partitioning (Breaking Numbers Apart)
Break numbers into hundreds, tens, and ones, then add each part.
5.
342 + 215 =
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6.
528 + 361 =
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7.
674 + 283 =
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8.
456 + 372 =
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Strategy 3: Jump to the Nearest Ten or Hundred
Add in steps by jumping to a friendly number first.
9.
67 + 48 =
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10.
185 + 76 =
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11.
394 + 158 =
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12.
567 + 285 =
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Challenge: Choose Your Own Strategy! ðŸ§
Use any mental strategy that works best for you.
13.
749 + 398 =
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14.
1,256 + 497 =
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15.
2,845 + 1,678 =
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