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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 232 · 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. 1.304 − 27 =
  2. 2.16 × 16 =
  3. 3.372 + 89 =
  4. 4.4 × 15 =
  5. 5.398 + 99 =
  6. 6.5% of 50 =
  7. 7.11 × 19 =
  8. 8.566 − 88 =
  9. 9.123 × 4 =
  10. 10.31² =
  11. 11.125 ÷ 25 =
  12. 12.26 × 5 =
  13. 13.47 × 15 =
  14. 14.296 − 36 =
  15. 15.Best estimate of 71 × 81? (a) 5600 (b) 11200 (c) 56000 (d) 560
  16. 16.6 + 3 + 4 + 7 =
  17. 17.9 + 3 + 1 + 1 + 4 =
  18. 18.82 + 22 + 64 + 13 =
  19. 19.410 + 29 =
  20. 20.17 × 50 =
  21. 21.14 × 17 =
  22. 22.60 × 4 =
  23. 23.424 + 17 =
  24. 24.61² =
  25. 25.3 + 1 + 4 + 6 + 7 =
  26. 26.20% of 500 =
  27. 27.745 ÷ 5 =
  28. 28.₹39.15 − ₹8.80 =
  29. 29.94 − 46 =
  30. 30.31² =
  31. 31.25% of 240 =
  32. 32.51 × 15 =
  33. 33.312 + 49 =
  34. 34.81² =
  35. 35.19 × 15 =
  36. 36.6 × 15 =
  37. 37.Check with nines: 42 × 77 = 3234. Correct or wrong? (a) wrong (b) correct
  38. 38.357 + 79 =
  39. 39.82 × 4 =
  40. 40.73 + 37 =

Answer key

  1. 277
  2. 256
  3. 461
  4. 60
  5. 497
  6. 2.5
  7. 209
  8. 478
  9. 492
  10. 961
  11. 5
  12. 130
  13. 705
  14. 260
  15. 5600
  16. 20
  17. 18
  18. 181
  19. 439
  20. 850
  21. 238
  22. 240
  23. 441
  24. 3721
  25. 21
  26. 100
  27. 149
  28. 30.35
  29. 48
  30. 961
  31. 60
  32. 765
  33. 361
  34. 6561
  35. 285
  36. 90
  37. correct
  38. 436
  39. 328
  40. 110

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