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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 142 · 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 + 35 + 58 + 14 =
  2. 2.58 + 17 + 83 + 36 =
  3. 3.67 + 87 + 11 + 41 =
  4. 4.54 + 45 + 85 + 37 =
  5. 5.26 + 78 + 30 + 84 =
  6. 6.56 + 11 + 56 + 44 =
  7. 7.66 + 19 + 80 + 56 =
  8. 8.56 + 42 + 62 + 79 =
  9. 9.60 + 87 + 60 + 47 =
  10. 10.48 + 77 + 81 + 79 =
  11. 11.48 + 57 + 12 + 36 =
  12. 12.30 + 41 + 89 + 62 =
  13. 13.29 + 62 + 63 + 63 =
  14. 14.53 + 53 + 35 + 65 =
  15. 15.31 + 51 + 31 + 67 =
  16. 16.68 + 32 + 17 + 55 =
  17. 17.15 + 45 + 28 + 17 =
  18. 18.63 + 30 + 27 + 84 =
  19. 19.32 + 45 + 62 + 59 =
  20. 20.52 + 86 + 35 + 14 =
  21. 21.64 + 27 + 64 + 73 =
  22. 22.89 + 79 + 26 + 73 =
  23. 23.65 + 28 + 26 + 40 =
  24. 24.80 + 46 + 12 + 51 =
  25. 25.15 + 64 + 24 + 73 =
  26. 26.34 + 23 + 64 + 67 =
  27. 27.88 + 14 + 29 + 61 =
  28. 28.34 + 76 + 14 + 19 =
  29. 29.24 + 24 + 36 + 74 =
  30. 30.64 + 80 + 31 + 33 =
  31. 31.37 + 24 + 11 + 64 =
  32. 32.63 + 57 + 32 + 64 =
  33. 33.12 + 49 + 69 + 74 =
  34. 34.67 + 30 + 20 + 63 =
  35. 35.21 + 54 + 81 + 32 =
  36. 36.32 + 11 + 82 + 47 =
  37. 37.33 + 72 + 33 + 14 =
  38. 38.53 + 12 + 19 + 65 =
  39. 39.74 + 40 + 84 + 49 =
  40. 40.33 + 26 + 30 + 81 =

Answer key

  1. 143
  2. 194
  3. 206
  4. 221
  5. 218
  6. 167
  7. 221
  8. 239
  9. 254
  10. 285
  11. 153
  12. 222
  13. 217
  14. 206
  15. 180
  16. 172
  17. 105
  18. 204
  19. 198
  20. 187
  21. 228
  22. 267
  23. 159
  24. 189
  25. 176
  26. 188
  27. 192
  28. 143
  29. 158
  30. 208
  31. 136
  32. 216
  33. 204
  34. 180
  35. 188
  36. 172
  37. 152
  38. 149
  39. 247
  40. 170

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