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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 192 · 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. 1.72 + 31 + 38 + 56 =
  2. 2.72 + 35 + 15 + 72 =
  3. 3.17 + 54 + 88 + 29 =
  4. 4.69 + 59 + 44 + 31 =
  5. 5.30 + 19 + 87 + 13 =
  6. 6.48 + 68 + 62 + 44 =
  7. 7.20 + 42 + 68 + 87 =
  8. 8.42 + 62 + 17 + 53 =
  9. 9.64 + 41 + 49 + 59 =
  10. 10.53 + 60 + 29 + 21 =
  11. 11.85 + 78 + 41 + 47 =
  12. 12.49 + 12 + 31 + 24 =
  13. 13.81 + 30 + 47 + 75 =
  14. 14.42 + 79 + 40 + 37 =
  15. 15.16 + 78 + 21 + 79 =
  16. 16.31 + 69 + 12 + 78 =
  17. 17.85 + 76 + 44 + 13 =
  18. 18.16 + 15 + 34 + 63 =
  19. 19.17 + 29 + 16 + 27 =
  20. 20.48 + 85 + 11 + 31 =
  21. 21.60 + 75 + 55 + 74 =
  22. 22.83 + 34 + 68 + 55 =
  23. 23.29 + 24 + 53 + 85 =
  24. 24.14 + 42 + 42 + 33 =
  25. 25.16 + 19 + 81 + 86 =
  26. 26.76 + 36 + 20 + 14 =
  27. 27.18 + 26 + 49 + 36 =
  28. 28.19 + 77 + 68 + 88 =
  29. 29.38 + 66 + 28 + 28 =
  30. 30.69 + 52 + 76 + 48 =
  31. 31.61 + 67 + 12 + 23 =
  32. 32.77 + 50 + 35 + 57 =
  33. 33.37 + 56 + 18 + 70 =
  34. 34.28 + 88 + 49 + 68 =
  35. 35.63 + 73 + 30 + 71 =
  36. 36.55 + 25 + 36 + 28 =
  37. 37.85 + 83 + 75 + 18 =
  38. 38.61 + 54 + 54 + 67 =
  39. 39.24 + 25 + 11 + 21 =
  40. 40.26 + 37 + 22 + 37 =

Answer key

  1. 197
  2. 194
  3. 188
  4. 203
  5. 149
  6. 222
  7. 217
  8. 174
  9. 213
  10. 163
  11. 251
  12. 116
  13. 233
  14. 198
  15. 194
  16. 190
  17. 218
  18. 128
  19. 89
  20. 175
  21. 264
  22. 240
  23. 191
  24. 131
  25. 202
  26. 146
  27. 129
  28. 252
  29. 160
  30. 245
  31. 163
  32. 219
  33. 181
  34. 233
  35. 237
  36. 144
  37. 261
  38. 236
  39. 81
  40. 122

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