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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 919 · 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. 1.44 + 51 + 40 + 71 =
  2. 2.22 + 61 + 19 + 86 =
  3. 3.19 + 22 + 84 + 16 =
  4. 4.42 + 75 + 11 + 83 =
  5. 5.43 + 20 + 18 + 65 =
  6. 6.71 + 45 + 28 + 58 =
  7. 7.59 + 55 + 72 + 11 =
  8. 8.72 + 89 + 72 + 37 =
  9. 9.60 + 11 + 53 + 47 =
  10. 10.78 + 59 + 13 + 66 =
  11. 11.23 + 53 + 24 + 14 =
  12. 12.25 + 88 + 15 + 61 =
  13. 13.58 + 28 + 62 + 11 =
  14. 14.58 + 81 + 44 + 29 =
  15. 15.34 + 48 + 36 + 61 =
  16. 16.66 + 24 + 75 + 11 =
  17. 17.61 + 57 + 51 + 23 =
  18. 18.24 + 16 + 57 + 21 =
  19. 19.23 + 63 + 68 + 80 =
  20. 20.21 + 19 + 64 + 80 =
  21. 21.66 + 13 + 61 + 85 =
  22. 22.89 + 59 + 62 + 18 =
  23. 23.45 + 25 + 61 + 70 =
  24. 24.24 + 73 + 83 + 45 =
  25. 25.80 + 43 + 13 + 25 =
  26. 26.34 + 18 + 47 + 32 =
  27. 27.73 + 33 + 21 + 29 =
  28. 28.69 + 59 + 28 + 58 =
  29. 29.89 + 37 + 15 + 11 =
  30. 30.46 + 69 + 51 + 78 =
  31. 31.26 + 11 + 75 + 24 =
  32. 32.49 + 63 + 66 + 62 =
  33. 33.48 + 37 + 39 + 44 =
  34. 34.21 + 70 + 86 + 35 =
  35. 35.74 + 53 + 63 + 17 =
  36. 36.14 + 24 + 51 + 27 =
  37. 37.20 + 45 + 83 + 41 =
  38. 38.42 + 58 + 27 + 60 =
  39. 39.16 + 56 + 62 + 47 =
  40. 40.37 + 16 + 50 + 31 =

Answer key

  1. 206
  2. 188
  3. 141
  4. 211
  5. 146
  6. 202
  7. 197
  8. 270
  9. 171
  10. 216
  11. 114
  12. 189
  13. 159
  14. 212
  15. 179
  16. 176
  17. 192
  18. 118
  19. 234
  20. 184
  21. 225
  22. 228
  23. 201
  24. 225
  25. 161
  26. 131
  27. 156
  28. 214
  29. 152
  30. 244
  31. 136
  32. 240
  33. 168
  34. 212
  35. 207
  36. 116
  37. 189
  38. 187
  39. 181
  40. 134

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