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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 23 · 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. 1.725 ÷ 5 =
  2. 2.256 − 87 =
  3. 3.2 + 3 + 7 + 7 =
  4. 4.86 + 35 + 24 + 17 =
  5. 5.Best estimate of 28 × 28? (a) 90 (b) 900 (c) 9000 (d) 1800
  6. 6.473 − 59 =
  7. 7.₹33.35 − ₹7.45 =
  8. 8.252 + 68 =
  9. 9.7 + 2 + 4 + 6 =
  10. 10.39² =
  11. 11.88 + 74 + 89 + 30 =
  12. 12.₹80.60 − ₹28.10 =
  13. 13.14 × 13 =
  14. 14.1 + 3 + 1 + 9 =
  15. 15.₹47.70 − ₹39.35 =
  16. 16.₹36.60 + ₹23.35 =
  17. 17.69² =
  18. 18.1600 ÷ 50 =
  19. 19.₹40.20 + ₹45.20 =
  20. 20.39² =
  21. 21.281 + 78 =
  22. 22.69² =
  23. 23.14 × 13 =
  24. 24.450 ÷ 50 =
  25. 25.1 + 6 + 8 + 9 + 9 =
  26. 26.1 + 7 + 6 + 4 =
  27. 27.1400 ÷ 50 =
  28. 28.₹21.15 + ₹12.50 =
  29. 29.36 × 15 =
  30. 30.4 + 9 + 6 + 4 + 2 =
  31. 31.5 × 15 =
  32. 32.₹32.40 + ₹43.05 =
  33. 33.54 × 15 =
  34. 34.29 × 50 =
  35. 35.10% of 60 =
  36. 36.19 × 11 =
  37. 37.4 + 8 + 8 + 2 + 9 =
  38. 38.23 × 15 =
  39. 39.19 × 18 =
  40. 40.148 × 4 =

Answer key

  1. 145
  2. 169
  3. 19
  4. 162
  5. 900
  6. 414
  7. 25.9
  8. 320
  9. 19
  10. 1521
  11. 281
  12. 52.5
  13. 182
  14. 14
  15. 8.35
  16. 59.95
  17. 4761
  18. 32
  19. 85.4
  20. 1521
  21. 359
  22. 4761
  23. 182
  24. 9
  25. 33
  26. 18
  27. 28
  28. 33.65
  29. 540
  30. 25
  31. 75
  32. 75.45
  33. 810
  34. 1450
  35. 6
  36. 209
  37. 31
  38. 345
  39. 342
  40. 592

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