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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 376 · 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. 1.28 + 84 + 53 + 41 =
  2. 2.73 + 30 + 14 + 23 =
  3. 3.11 + 82 + 31 + 48 =
  4. 4.78 + 25 + 74 + 29 =
  5. 5.14 + 37 + 83 + 50 =
  6. 6.17 + 61 + 40 + 64 =
  7. 7.19 + 33 + 35 + 12 =
  8. 8.65 + 66 + 74 + 25 =
  9. 9.15 + 14 + 29 + 67 =
  10. 10.76 + 88 + 37 + 31 =
  11. 11.88 + 37 + 39 + 57 =
  12. 12.53 + 13 + 32 + 47 =
  13. 13.24 + 39 + 27 + 64 =
  14. 14.43 + 22 + 12 + 30 =
  15. 15.55 + 67 + 18 + 25 =
  16. 16.84 + 22 + 55 + 72 =
  17. 17.39 + 36 + 44 + 86 =
  18. 18.22 + 37 + 46 + 86 =
  19. 19.30 + 33 + 73 + 66 =
  20. 20.12 + 79 + 58 + 46 =
  21. 21.50 + 56 + 75 + 44 =
  22. 22.39 + 14 + 15 + 11 =
  23. 23.16 + 83 + 69 + 61 =
  24. 24.18 + 35 + 67 + 74 =
  25. 25.61 + 18 + 64 + 66 =
  26. 26.50 + 69 + 88 + 56 =
  27. 27.27 + 36 + 85 + 13 =
  28. 28.38 + 43 + 26 + 79 =
  29. 29.86 + 73 + 87 + 64 =
  30. 30.12 + 55 + 63 + 11 =
  31. 31.20 + 29 + 38 + 38 =
  32. 32.51 + 26 + 48 + 84 =
  33. 33.55 + 68 + 66 + 13 =
  34. 34.49 + 85 + 73 + 15 =
  35. 35.23 + 88 + 79 + 66 =
  36. 36.33 + 18 + 72 + 83 =
  37. 37.61 + 72 + 15 + 18 =
  38. 38.68 + 25 + 41 + 28 =
  39. 39.34 + 54 + 12 + 71 =
  40. 40.51 + 77 + 40 + 85 =

Answer key

  1. 206
  2. 140
  3. 172
  4. 206
  5. 184
  6. 182
  7. 99
  8. 230
  9. 125
  10. 232
  11. 221
  12. 145
  13. 154
  14. 107
  15. 165
  16. 233
  17. 205
  18. 191
  19. 202
  20. 195
  21. 225
  22. 79
  23. 229
  24. 194
  25. 209
  26. 263
  27. 161
  28. 186
  29. 310
  30. 141
  31. 125
  32. 209
  33. 202
  34. 222
  35. 256
  36. 206
  37. 166
  38. 162
  39. 171
  40. 253

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