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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 187 · 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. 1.89 + 42 + 13 + 65 =
  2. 2.33 + 41 + 74 + 53 =
  3. 3.65 + 67 + 15 + 47 =
  4. 4.83 + 80 + 77 + 44 =
  5. 5.89 + 28 + 27 + 82 =
  6. 6.88 + 82 + 53 + 37 =
  7. 7.60 + 78 + 71 + 59 =
  8. 8.51 + 27 + 75 + 78 =
  9. 9.20 + 41 + 31 + 76 =
  10. 10.84 + 61 + 46 + 63 =
  11. 11.81 + 60 + 43 + 78 =
  12. 12.16 + 45 + 84 + 39 =
  13. 13.67 + 60 + 33 + 30 =
  14. 14.42 + 72 + 78 + 76 =
  15. 15.88 + 52 + 60 + 75 =
  16. 16.86 + 55 + 69 + 54 =
  17. 17.21 + 30 + 51 + 16 =
  18. 18.14 + 21 + 30 + 89 =
  19. 19.74 + 32 + 81 + 76 =
  20. 20.80 + 13 + 33 + 87 =
  21. 21.38 + 62 + 31 + 37 =
  22. 22.77 + 23 + 87 + 52 =
  23. 23.80 + 69 + 55 + 65 =
  24. 24.47 + 12 + 81 + 69 =
  25. 25.37 + 87 + 50 + 69 =
  26. 26.65 + 87 + 89 + 61 =
  27. 27.67 + 19 + 27 + 14 =
  28. 28.58 + 77 + 73 + 21 =
  29. 29.82 + 15 + 12 + 16 =
  30. 30.25 + 68 + 36 + 24 =
  31. 31.19 + 31 + 80 + 79 =
  32. 32.29 + 65 + 26 + 16 =
  33. 33.60 + 66 + 27 + 43 =
  34. 34.12 + 32 + 19 + 24 =
  35. 35.30 + 83 + 86 + 76 =
  36. 36.70 + 40 + 22 + 12 =
  37. 37.66 + 34 + 20 + 85 =
  38. 38.40 + 73 + 36 + 12 =
  39. 39.72 + 63 + 86 + 15 =
  40. 40.66 + 71 + 13 + 15 =

Answer key

  1. 209
  2. 201
  3. 194
  4. 284
  5. 226
  6. 260
  7. 268
  8. 231
  9. 168
  10. 254
  11. 262
  12. 184
  13. 190
  14. 268
  15. 275
  16. 264
  17. 118
  18. 154
  19. 263
  20. 213
  21. 168
  22. 239
  23. 269
  24. 209
  25. 243
  26. 302
  27. 127
  28. 229
  29. 125
  30. 153
  31. 209
  32. 136
  33. 196
  34. 87
  35. 275
  36. 144
  37. 205
  38. 161
  39. 236
  40. 165

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