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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 316 · 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. 1.58 + 54 + 47 + 36 =
  2. 2.51 + 57 + 52 + 41 =
  3. 3.79 + 13 + 76 + 13 =
  4. 4.75 + 18 + 85 + 49 =
  5. 5.56 + 82 + 45 + 16 =
  6. 6.22 + 54 + 16 + 80 =
  7. 7.64 + 13 + 87 + 61 =
  8. 8.71 + 64 + 71 + 23 =
  9. 9.73 + 66 + 33 + 68 =
  10. 10.13 + 47 + 50 + 29 =
  11. 11.51 + 84 + 77 + 12 =
  12. 12.23 + 71 + 58 + 19 =
  13. 13.85 + 41 + 45 + 18 =
  14. 14.25 + 53 + 15 + 73 =
  15. 15.84 + 61 + 19 + 82 =
  16. 16.30 + 85 + 84 + 76 =
  17. 17.11 + 18 + 85 + 19 =
  18. 18.82 + 66 + 86 + 66 =
  19. 19.65 + 62 + 31 + 76 =
  20. 20.54 + 24 + 55 + 59 =
  21. 21.62 + 37 + 84 + 27 =
  22. 22.14 + 43 + 68 + 55 =
  23. 23.49 + 13 + 12 + 40 =
  24. 24.26 + 13 + 57 + 87 =
  25. 25.68 + 21 + 16 + 54 =
  26. 26.83 + 87 + 42 + 47 =
  27. 27.64 + 29 + 89 + 46 =
  28. 28.54 + 68 + 47 + 58 =
  29. 29.68 + 48 + 87 + 85 =
  30. 30.79 + 59 + 70 + 37 =
  31. 31.76 + 68 + 62 + 65 =
  32. 32.35 + 58 + 35 + 50 =
  33. 33.49 + 48 + 82 + 88 =
  34. 34.62 + 33 + 33 + 72 =
  35. 35.25 + 47 + 33 + 14 =
  36. 36.23 + 53 + 65 + 81 =
  37. 37.24 + 49 + 32 + 63 =
  38. 38.15 + 61 + 68 + 40 =
  39. 39.75 + 43 + 15 + 47 =
  40. 40.16 + 33 + 14 + 58 =

Answer key

  1. 195
  2. 201
  3. 181
  4. 227
  5. 199
  6. 172
  7. 225
  8. 229
  9. 240
  10. 139
  11. 224
  12. 171
  13. 189
  14. 166
  15. 246
  16. 275
  17. 133
  18. 300
  19. 234
  20. 192
  21. 210
  22. 180
  23. 114
  24. 183
  25. 159
  26. 259
  27. 228
  28. 227
  29. 288
  30. 245
  31. 271
  32. 178
  33. 267
  34. 200
  35. 119
  36. 222
  37. 168
  38. 184
  39. 180
  40. 121

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