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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 491 · 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.₹72.50 − ₹15.05 =
  2. 2.15 × 17 =
  3. 3.20 × 5 =
  4. 4.₹76.25 + ₹27.45 =
  5. 5.8 + 3 + 7 + 3 + 5 =
  6. 6.39 × 50 =
  7. 7.93 × 50 =
  8. 8.300 ÷ 50 =
  9. 9.₹72.15 − ₹44.10 =
  10. 10.850 ÷ 50 =
  11. 11.Best estimate of 89 × 82? (a) 14400 (b) 720 (c) 7200 (d) 72000
  12. 12.50 × 8 =
  13. 13.605 ÷ 5 =
  14. 14.61 + 27 + 74 + 46 =
  15. 15.Best estimate of 298 × 3? (a) 9000 (b) 90 (c) 900 (d) 1800
  16. 16.50 × 15 =
  17. 17.73 × 8 =
  18. 18.25 × 15 =
  19. 19.9 + 7 + 7 + 3 + 8 =
  20. 20.25 × 4 =
  21. 21.66 + 89 =
  22. 22.47 × 15 =
  23. 23.37 × 8 =
  24. 24.11 × 14 =
  25. 25.16 + 60 + 78 + 27 =
  26. 26.1450 ÷ 50 =
  27. 27.18 × 50 =
  28. 28.542 − 46 =
  29. 29.82 + 42 + 69 + 87 =
  30. 30.79² =
  31. 31.263 + 29 =
  32. 32.37 + 75 + 28 + 51 =
  33. 33.925 ÷ 25 =
  34. 34.91² =
  35. 35.58 × 15 =
  36. 36.22 + 41 + 30 + 27 =
  37. 37.18 × 11 =
  38. 38.63 × 15 =
  39. 39.296 + 97 =
  40. 40.88 + 45 + 88 + 28 =

Answer key

  1. 57.45
  2. 255
  3. 100
  4. 103.7
  5. 26
  6. 1950
  7. 4650
  8. 6
  9. 28.05
  10. 17
  11. 7200
  12. 400
  13. 121
  14. 208
  15. 900
  16. 750
  17. 584
  18. 375
  19. 34
  20. 100
  21. 155
  22. 705
  23. 296
  24. 154
  25. 181
  26. 29
  27. 900
  28. 496
  29. 280
  30. 6241
  31. 292
  32. 191
  33. 37
  34. 8281
  35. 870
  36. 120
  37. 198
  38. 945
  39. 393
  40. 249

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