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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 291 · 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. 1.32 + 16 + 63 + 72 =
  2. 2.63 + 49 + 29 + 79 =
  3. 3.15 + 64 + 86 + 87 =
  4. 4.52 + 26 + 32 + 29 =
  5. 5.20 + 79 + 79 + 38 =
  6. 6.74 + 35 + 27 + 34 =
  7. 7.50 + 62 + 79 + 23 =
  8. 8.76 + 28 + 30 + 57 =
  9. 9.38 + 56 + 88 + 76 =
  10. 10.50 + 39 + 68 + 48 =
  11. 11.39 + 44 + 71 + 55 =
  12. 12.16 + 61 + 13 + 85 =
  13. 13.84 + 75 + 65 + 26 =
  14. 14.65 + 48 + 38 + 37 =
  15. 15.55 + 41 + 53 + 65 =
  16. 16.45 + 71 + 28 + 19 =
  17. 17.17 + 12 + 14 + 25 =
  18. 18.15 + 41 + 70 + 75 =
  19. 19.65 + 47 + 68 + 78 =
  20. 20.11 + 20 + 76 + 67 =
  21. 21.67 + 34 + 58 + 62 =
  22. 22.24 + 34 + 48 + 56 =
  23. 23.24 + 67 + 84 + 11 =
  24. 24.24 + 47 + 45 + 73 =
  25. 25.26 + 46 + 24 + 26 =
  26. 26.18 + 25 + 62 + 86 =
  27. 27.57 + 32 + 60 + 26 =
  28. 28.75 + 72 + 54 + 61 =
  29. 29.68 + 69 + 33 + 68 =
  30. 30.74 + 13 + 22 + 17 =
  31. 31.88 + 59 + 58 + 14 =
  32. 32.39 + 81 + 84 + 84 =
  33. 33.48 + 18 + 62 + 37 =
  34. 34.76 + 24 + 59 + 59 =
  35. 35.88 + 26 + 11 + 63 =
  36. 36.11 + 65 + 14 + 55 =
  37. 37.43 + 63 + 30 + 78 =
  38. 38.83 + 55 + 40 + 11 =
  39. 39.29 + 14 + 59 + 29 =
  40. 40.53 + 33 + 19 + 87 =

Answer key

  1. 183
  2. 220
  3. 252
  4. 139
  5. 216
  6. 170
  7. 214
  8. 191
  9. 258
  10. 205
  11. 209
  12. 175
  13. 250
  14. 188
  15. 214
  16. 163
  17. 68
  18. 201
  19. 258
  20. 174
  21. 221
  22. 162
  23. 186
  24. 189
  25. 122
  26. 191
  27. 175
  28. 262
  29. 238
  30. 126
  31. 219
  32. 288
  33. 165
  34. 218
  35. 188
  36. 145
  37. 214
  38. 189
  39. 131
  40. 192

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