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Lesson Worksheet: Mental Math Strategies Mathematics

In this worksheet, we will practice using mental strategies to add and subtract numbers up to 10,000.

Q1:

Which of the following strategies could be used to find the result of 5545199?

  • AFinding the result of 5545200 and then subtracting 1
  • BFinding the result of 5550199 and then adding 5
  • CFinding the result of 5545200 and then adding 1
  • DFinding the result of 5550200 and then subtracting 5

Q2:

To calculate 1257+2998 mentally, we could .

  • Afind the result of 1257+3000 and then subtract 2 to get 4‎ ‎255
  • Bfind the result of 1257+3000 and then add 2 to get 4‎ ‎259
  • Cfind the result of 1300+2998 and then add 43 to get 4‎ ‎341
  • Dfind the result of 1257+3000 and then subtract 1 to get 4‎ ‎256

Q3:

Use <, >, or = to fill in the gap: 7,6041515+7,604.

  • A=
  • B<
  • C>

This lesson includes 9 additional question variations for subscribers.

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