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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 520 · 40 questions
TalentJR

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

NameDateTime takenScore ___ / 40
  1. 1.139 + 39 =
  2. 2.147 + 57 =
  3. 3.Best estimate of 88 × 72? (a) 63000 (b) 12600 (c) 6300 (d) 630
  4. 4.17 + 86 + 26 + 46 =
  5. 5.172 − 76 =
  6. 6.25% of 130 =
  7. 7.219 − 87 =
  8. 8.104 + 39 =
  9. 9.49² =
  10. 10.19² =
  11. 11.25 × 8 =
  12. 12.12 × 17 =
  13. 13.318 − 49 =
  14. 14.253 + 28 =
  15. 15.299 + 47 =
  16. 16.₹89.15 + ₹44.90 =
  17. 17.78 + 80 + 73 + 81 =
  18. 18.519 − 39 =
  19. 19.27 + 19 =
  20. 20.86 × 5 =
  21. 21.539 − 78 =
  22. 22.437 − 56 =
  23. 23.31² =
  24. 24.78 × 5 =
  25. 25.89² =
  26. 26.₹28.10 + ₹41.15 =
  27. 27.135 + 78 =
  28. 28.25 × 8 =
  29. 29.482 − 56 =
  30. 30.10% of 590 =
  31. 31.437 + 37 =
  32. 32.550 ÷ 5 =
  33. 33.20 + 29 + 54 + 70 =
  34. 34.142 − 79 =
  35. 35.72 + 89 + 69 + 33 =
  36. 36.15 × 17 =
  37. 37.2 + 2 + 5 + 8 + 1 =
  38. 38.3 + 7 + 1 + 7 =
  39. 39.71² =
  40. 40.750 ÷ 50 =

Answer key

  1. 178
  2. 204
  3. 6300
  4. 175
  5. 96
  6. 32.5
  7. 132
  8. 143
  9. 2401
  10. 361
  11. 200
  12. 204
  13. 269
  14. 281
  15. 346
  16. 134.05
  17. 312
  18. 480
  19. 46
  20. 430
  21. 461
  22. 381
  23. 961
  24. 390
  25. 7921
  26. 69.25
  27. 213
  28. 200
  29. 426
  30. 59
  31. 474
  32. 110
  33. 173
  34. 63
  35. 263
  36. 255
  37. 18
  38. 18
  39. 5041
  40. 15

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