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Mastering Addition Strategies for Mental Math

Enhance your mental math skills with six effective strategies including rounding, breaking addends, and using the standard algorithm. Learn how to add numbers quickly and accurately in your head!

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Mastering Addition Strategies for Mental Math

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  1. SIXADDITION STRATEGIES

  2. #1 Round and Adjust: 63 + 28 = 63 + 30 = 93 93-2 = 91

  3. #1 Round and Adjust: 34+47 =

  4. #2 Take and Give 63 + 28 +2 63 + 28 61 + 30 = 91

  5. #2 Take and Give 35+29=

  6. #3 Start from the Left 63 +28 60+ 20= 80 3+ 8= 11 80+ 11 = 91

  7. #3 Start from the Left 57 + 36

  8. #4 Break One Addend Apart 63 +28 63+ 20= 83 83+ 8= 91

  9. #4 Break One Addend Apart Another Way 63 +28 60+ 28= 88 88+ 3= 91

  10. #4 Break One Addend Apart 24+ 49

  11. #5 Add Up 63 + 28 + 7 + 20 + 1 83 90 91 63

  12. #5 Add Up Another Way 63 + 28 + 60 + 2 + 1 90 91 88 28

  13. #5 Add Up 27 + 65

  14. #6 Standard Algorithm 63 + 28 Put 1 one down and carry 1 ten 3 ones plus 8 ones = 11 ones 1 ten + 6 tens + 2 tens = 9 tens 1 + 6 3 91 2 8

  15. #6 Standard Algorithm 38 + 42 = 38 710 + 42

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