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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 132 · 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. 1.45 + 32 + 67 + 48 =
  2. 2.35 + 76 + 47 + 84 =
  3. 3.51 + 74 + 39 + 69 =
  4. 4.19 + 29 + 42 + 54 =
  5. 5.68 + 79 + 76 + 20 =
  6. 6.49 + 69 + 71 + 52 =
  7. 7.14 + 67 + 77 + 22 =
  8. 8.32 + 89 + 21 + 23 =
  9. 9.52 + 14 + 38 + 36 =
  10. 10.53 + 50 + 25 + 15 =
  11. 11.45 + 84 + 19 + 22 =
  12. 12.36 + 51 + 83 + 69 =
  13. 13.28 + 55 + 51 + 43 =
  14. 14.11 + 30 + 59 + 84 =
  15. 15.46 + 33 + 33 + 36 =
  16. 16.35 + 20 + 82 + 11 =
  17. 17.48 + 15 + 22 + 51 =
  18. 18.12 + 71 + 25 + 12 =
  19. 19.34 + 58 + 59 + 14 =
  20. 20.59 + 31 + 75 + 81 =
  21. 21.43 + 67 + 74 + 67 =
  22. 22.72 + 39 + 26 + 57 =
  23. 23.19 + 27 + 31 + 16 =
  24. 24.52 + 58 + 34 + 88 =
  25. 25.54 + 71 + 86 + 17 =
  26. 26.27 + 76 + 63 + 50 =
  27. 27.46 + 83 + 71 + 73 =
  28. 28.29 + 44 + 18 + 13 =
  29. 29.73 + 32 + 84 + 40 =
  30. 30.79 + 73 + 24 + 59 =
  31. 31.79 + 50 + 31 + 83 =
  32. 32.74 + 14 + 29 + 31 =
  33. 33.35 + 39 + 69 + 58 =
  34. 34.80 + 56 + 15 + 43 =
  35. 35.46 + 39 + 20 + 34 =
  36. 36.78 + 30 + 15 + 89 =
  37. 37.89 + 84 + 39 + 87 =
  38. 38.20 + 84 + 88 + 33 =
  39. 39.36 + 15 + 89 + 86 =
  40. 40.32 + 28 + 50 + 61 =

Answer key

  1. 192
  2. 242
  3. 233
  4. 144
  5. 243
  6. 241
  7. 180
  8. 165
  9. 140
  10. 143
  11. 170
  12. 239
  13. 177
  14. 184
  15. 148
  16. 148
  17. 136
  18. 120
  19. 165
  20. 246
  21. 251
  22. 194
  23. 93
  24. 232
  25. 228
  26. 216
  27. 273
  28. 104
  29. 229
  30. 235
  31. 243
  32. 148
  33. 201
  34. 194
  35. 139
  36. 212
  37. 299
  38. 225
  39. 226
  40. 171

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