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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 320 · 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. 1.67 + 22 + 27 + 36 =
  2. 2.77 + 32 + 52 + 40 =
  3. 3.15 + 50 + 62 + 84 =
  4. 4.18 + 20 + 50 + 88 =
  5. 5.27 + 22 + 12 + 11 =
  6. 6.53 + 67 + 38 + 65 =
  7. 7.34 + 42 + 81 + 89 =
  8. 8.13 + 39 + 11 + 68 =
  9. 9.15 + 79 + 76 + 63 =
  10. 10.25 + 52 + 14 + 70 =
  11. 11.49 + 54 + 13 + 32 =
  12. 12.16 + 74 + 57 + 78 =
  13. 13.65 + 51 + 60 + 29 =
  14. 14.83 + 86 + 81 + 86 =
  15. 15.86 + 58 + 60 + 32 =
  16. 16.30 + 87 + 62 + 63 =
  17. 17.54 + 50 + 58 + 55 =
  18. 18.50 + 43 + 70 + 87 =
  19. 19.76 + 75 + 82 + 26 =
  20. 20.77 + 13 + 20 + 79 =
  21. 21.73 + 39 + 82 + 44 =
  22. 22.62 + 74 + 46 + 71 =
  23. 23.74 + 22 + 32 + 35 =
  24. 24.12 + 88 + 27 + 19 =
  25. 25.41 + 12 + 73 + 31 =
  26. 26.14 + 39 + 17 + 61 =
  27. 27.23 + 30 + 87 + 82 =
  28. 28.27 + 79 + 23 + 80 =
  29. 29.80 + 88 + 15 + 43 =
  30. 30.79 + 69 + 75 + 13 =
  31. 31.24 + 88 + 70 + 14 =
  32. 32.21 + 16 + 27 + 18 =
  33. 33.72 + 12 + 26 + 66 =
  34. 34.64 + 11 + 18 + 37 =
  35. 35.33 + 45 + 76 + 34 =
  36. 36.78 + 65 + 77 + 65 =
  37. 37.84 + 47 + 75 + 23 =
  38. 38.34 + 13 + 41 + 41 =
  39. 39.65 + 78 + 53 + 72 =
  40. 40.69 + 32 + 16 + 72 =

Answer key

  1. 152
  2. 201
  3. 211
  4. 176
  5. 72
  6. 223
  7. 246
  8. 131
  9. 233
  10. 161
  11. 148
  12. 225
  13. 205
  14. 336
  15. 236
  16. 242
  17. 217
  18. 250
  19. 259
  20. 189
  21. 238
  22. 253
  23. 163
  24. 146
  25. 157
  26. 131
  27. 222
  28. 209
  29. 226
  30. 236
  31. 196
  32. 82
  33. 176
  34. 130
  35. 188
  36. 285
  37. 229
  38. 129
  39. 268
  40. 189

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