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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 148 · 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. 1.36 + 13 + 72 + 64 =
  2. 2.60 + 42 + 53 + 54 =
  3. 3.56 + 84 + 71 + 46 =
  4. 4.31 + 53 + 74 + 67 =
  5. 5.27 + 38 + 83 + 64 =
  6. 6.57 + 28 + 30 + 73 =
  7. 7.30 + 13 + 70 + 59 =
  8. 8.78 + 83 + 23 + 18 =
  9. 9.33 + 40 + 35 + 35 =
  10. 10.89 + 21 + 23 + 45 =
  11. 11.42 + 64 + 40 + 82 =
  12. 12.82 + 81 + 87 + 12 =
  13. 13.37 + 48 + 35 + 22 =
  14. 14.22 + 54 + 16 + 17 =
  15. 15.25 + 59 + 45 + 88 =
  16. 16.15 + 15 + 20 + 65 =
  17. 17.22 + 87 + 72 + 64 =
  18. 18.25 + 24 + 34 + 29 =
  19. 19.16 + 82 + 47 + 33 =
  20. 20.41 + 21 + 17 + 44 =
  21. 21.12 + 37 + 57 + 59 =
  22. 22.39 + 79 + 56 + 48 =
  23. 23.83 + 81 + 19 + 54 =
  24. 24.28 + 42 + 20 + 77 =
  25. 25.86 + 58 + 59 + 48 =
  26. 26.70 + 47 + 70 + 87 =
  27. 27.69 + 80 + 13 + 19 =
  28. 28.35 + 29 + 60 + 33 =
  29. 29.61 + 21 + 17 + 77 =
  30. 30.27 + 68 + 87 + 21 =
  31. 31.17 + 21 + 32 + 16 =
  32. 32.84 + 40 + 64 + 25 =
  33. 33.64 + 31 + 53 + 57 =
  34. 34.64 + 68 + 31 + 16 =
  35. 35.48 + 63 + 24 + 51 =
  36. 36.20 + 22 + 65 + 33 =
  37. 37.13 + 39 + 29 + 69 =
  38. 38.14 + 13 + 64 + 47 =
  39. 39.78 + 21 + 57 + 37 =
  40. 40.33 + 85 + 75 + 46 =

Answer key

  1. 185
  2. 209
  3. 257
  4. 225
  5. 212
  6. 188
  7. 172
  8. 202
  9. 143
  10. 178
  11. 228
  12. 262
  13. 142
  14. 109
  15. 217
  16. 115
  17. 245
  18. 112
  19. 178
  20. 123
  21. 165
  22. 222
  23. 237
  24. 167
  25. 251
  26. 274
  27. 181
  28. 157
  29. 176
  30. 203
  31. 86
  32. 213
  33. 205
  34. 179
  35. 186
  36. 140
  37. 150
  38. 138
  39. 193
  40. 239

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