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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 91 · 40 questions
TalentJR

The fast method (Keep a running total): Start with the first number. Add the tens of the next number, then its ones. Keep going until the list ends — only one total in your head at a time.

NameDateTime takenScore ___ / 40
  1. 1.65 + 67 + 19 + 38 =
  2. 2.37 + 39 + 89 + 62 =
  3. 3.44 + 29 + 48 + 24 =
  4. 4.33 + 62 + 84 + 27 =
  5. 5.57 + 30 + 63 + 56 =
  6. 6.58 + 83 + 22 + 16 =
  7. 7.82 + 46 + 30 + 58 =
  8. 8.75 + 86 + 41 + 61 =
  9. 9.25 + 65 + 23 + 32 =
  10. 10.13 + 45 + 16 + 70 =
  11. 11.75 + 71 + 58 + 35 =
  12. 12.73 + 68 + 12 + 60 =
  13. 13.31 + 29 + 32 + 37 =
  14. 14.28 + 65 + 49 + 44 =
  15. 15.77 + 53 + 81 + 39 =
  16. 16.88 + 80 + 54 + 64 =
  17. 17.77 + 37 + 86 + 46 =
  18. 18.46 + 46 + 40 + 37 =
  19. 19.16 + 13 + 55 + 52 =
  20. 20.21 + 81 + 22 + 74 =
  21. 21.33 + 48 + 40 + 63 =
  22. 22.41 + 58 + 30 + 42 =
  23. 23.82 + 11 + 28 + 43 =
  24. 24.84 + 26 + 62 + 65 =
  25. 25.36 + 15 + 37 + 82 =
  26. 26.88 + 13 + 87 + 44 =
  27. 27.30 + 89 + 86 + 48 =
  28. 28.31 + 51 + 33 + 46 =
  29. 29.82 + 16 + 43 + 81 =
  30. 30.70 + 66 + 25 + 23 =
  31. 31.54 + 13 + 84 + 73 =
  32. 32.54 + 46 + 32 + 40 =
  33. 33.49 + 71 + 34 + 37 =
  34. 34.54 + 79 + 44 + 80 =
  35. 35.60 + 29 + 71 + 29 =
  36. 36.44 + 12 + 58 + 48 =
  37. 37.59 + 74 + 29 + 83 =
  38. 38.15 + 57 + 88 + 74 =
  39. 39.54 + 54 + 57 + 57 =
  40. 40.29 + 14 + 68 + 72 =

Answer key

  1. 189
  2. 227
  3. 145
  4. 206
  5. 206
  6. 179
  7. 216
  8. 263
  9. 145
  10. 144
  11. 239
  12. 213
  13. 129
  14. 186
  15. 250
  16. 286
  17. 246
  18. 169
  19. 136
  20. 198
  21. 184
  22. 171
  23. 164
  24. 237
  25. 170
  26. 232
  27. 253
  28. 161
  29. 222
  30. 184
  31. 224
  32. 172
  33. 191
  34. 257
  35. 189
  36. 162
  37. 245
  38. 234
  39. 222
  40. 183

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