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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 848 · 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. 1.14 + 15 + 54 + 29 =
  2. 2.50 + 53 + 41 + 62 =
  3. 3.18 + 21 + 20 + 57 =
  4. 4.25 + 44 + 18 + 63 =
  5. 5.55 + 83 + 26 + 75 =
  6. 6.28 + 32 + 43 + 21 =
  7. 7.81 + 55 + 53 + 27 =
  8. 8.70 + 49 + 30 + 71 =
  9. 9.11 + 52 + 29 + 52 =
  10. 10.16 + 64 + 51 + 37 =
  11. 11.32 + 89 + 77 + 80 =
  12. 12.15 + 37 + 83 + 65 =
  13. 13.67 + 33 + 54 + 20 =
  14. 14.75 + 32 + 63 + 86 =
  15. 15.85 + 73 + 19 + 87 =
  16. 16.38 + 45 + 84 + 39 =
  17. 17.50 + 78 + 57 + 35 =
  18. 18.27 + 68 + 63 + 14 =
  19. 19.32 + 42 + 12 + 19 =
  20. 20.30 + 11 + 66 + 37 =
  21. 21.76 + 53 + 37 + 35 =
  22. 22.35 + 66 + 68 + 16 =
  23. 23.47 + 38 + 79 + 56 =
  24. 24.15 + 76 + 15 + 35 =
  25. 25.43 + 16 + 36 + 50 =
  26. 26.15 + 30 + 89 + 15 =
  27. 27.47 + 18 + 20 + 47 =
  28. 28.21 + 19 + 62 + 25 =
  29. 29.80 + 63 + 45 + 87 =
  30. 30.49 + 11 + 72 + 28 =
  31. 31.57 + 77 + 27 + 72 =
  32. 32.20 + 74 + 13 + 76 =
  33. 33.73 + 66 + 70 + 36 =
  34. 34.42 + 88 + 52 + 20 =
  35. 35.53 + 28 + 31 + 70 =
  36. 36.80 + 27 + 64 + 41 =
  37. 37.69 + 15 + 21 + 23 =
  38. 38.35 + 11 + 75 + 44 =
  39. 39.21 + 77 + 28 + 30 =
  40. 40.88 + 70 + 12 + 69 =

Answer key

  1. 112
  2. 206
  3. 116
  4. 150
  5. 239
  6. 124
  7. 216
  8. 220
  9. 144
  10. 168
  11. 278
  12. 200
  13. 174
  14. 256
  15. 264
  16. 206
  17. 220
  18. 172
  19. 105
  20. 144
  21. 201
  22. 185
  23. 220
  24. 141
  25. 145
  26. 149
  27. 132
  28. 127
  29. 275
  30. 160
  31. 233
  32. 183
  33. 245
  34. 202
  35. 182
  36. 212
  37. 128
  38. 165
  39. 156
  40. 239

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