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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 130 · 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. 1.44 + 32 + 73 + 72 =
  2. 2.68 + 57 + 18 + 74 =
  3. 3.71 + 47 + 79 + 82 =
  4. 4.82 + 26 + 51 + 11 =
  5. 5.83 + 13 + 68 + 15 =
  6. 6.16 + 11 + 38 + 50 =
  7. 7.37 + 88 + 15 + 62 =
  8. 8.27 + 67 + 17 + 34 =
  9. 9.79 + 20 + 50 + 33 =
  10. 10.52 + 83 + 24 + 68 =
  11. 11.79 + 25 + 71 + 64 =
  12. 12.54 + 51 + 88 + 30 =
  13. 13.59 + 16 + 13 + 30 =
  14. 14.70 + 73 + 61 + 84 =
  15. 15.25 + 11 + 17 + 78 =
  16. 16.24 + 88 + 40 + 72 =
  17. 17.13 + 14 + 48 + 51 =
  18. 18.22 + 81 + 15 + 45 =
  19. 19.42 + 21 + 12 + 14 =
  20. 20.16 + 12 + 89 + 79 =
  21. 21.19 + 78 + 50 + 69 =
  22. 22.87 + 62 + 12 + 71 =
  23. 23.86 + 56 + 64 + 61 =
  24. 24.26 + 74 + 59 + 89 =
  25. 25.64 + 62 + 84 + 14 =
  26. 26.28 + 49 + 76 + 27 =
  27. 27.41 + 66 + 44 + 14 =
  28. 28.36 + 33 + 64 + 21 =
  29. 29.42 + 48 + 35 + 18 =
  30. 30.65 + 49 + 57 + 23 =
  31. 31.37 + 23 + 55 + 49 =
  32. 32.85 + 37 + 59 + 87 =
  33. 33.65 + 17 + 76 + 17 =
  34. 34.80 + 32 + 58 + 21 =
  35. 35.66 + 23 + 29 + 74 =
  36. 36.53 + 87 + 70 + 67 =
  37. 37.84 + 43 + 49 + 73 =
  38. 38.55 + 30 + 21 + 22 =
  39. 39.58 + 20 + 73 + 41 =
  40. 40.75 + 24 + 11 + 14 =

Answer key

  1. 221
  2. 217
  3. 279
  4. 170
  5. 179
  6. 115
  7. 202
  8. 145
  9. 182
  10. 227
  11. 239
  12. 223
  13. 118
  14. 288
  15. 131
  16. 224
  17. 126
  18. 163
  19. 89
  20. 196
  21. 216
  22. 232
  23. 267
  24. 248
  25. 224
  26. 180
  27. 165
  28. 154
  29. 143
  30. 194
  31. 164
  32. 268
  33. 175
  34. 191
  35. 192
  36. 277
  37. 249
  38. 128
  39. 192
  40. 124

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