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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 747 · 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. 1.1% of 870 =
  2. 2.850 ÷ 25 =
  3. 3.81² =
  4. 4.2 + 7 + 7 + 5 + 8 =
  5. 5.3 + 7 + 2 + 9 =
  6. 6.Best estimate of 301 × 6? (a) 180 (b) 3600 (c) 1800 (d) 18000
  7. 7.15 × 15 =
  8. 8.207 + 79 =
  9. 9.4 + 3 + 8 + 4 + 6 =
  10. 10.34 × 15 =
  11. 11.383 − 37 =
  12. 12.31² =
  13. 13.₹40.15 + ₹15.45 =
  14. 14.Best estimate of 71 × 41? (a) 28000 (b) 5600 (c) 280 (d) 2800
  15. 15.1 + 1 + 2 + 9 =
  16. 16.₹49.25 − ₹15.50 =
  17. 17.521 − 96 =
  18. 18.85 × 50 =
  19. 19.21 × 15 =
  20. 20.75 + 84 + 47 + 81 =
  21. 21.35 × 15 =
  22. 22.15 × 14 =
  23. 23.59 × 15 =
  24. 24.25% of 230 =
  25. 25.15% of 150 =
  26. 26.₹54.90 + ₹39.05 =
  27. 27.136 × 4 =
  28. 28.141 − 97 =
  29. 29.₹77.20 + ₹33.60 =
  30. 30.5% of 460 =
  31. 31.25% of 40 =
  32. 32.Best estimate of 599 × 5? (a) 30000 (b) 6000 (c) 3000 (d) 300
  33. 33.34 × 15 =
  34. 34.159 + 48 =
  35. 35.50 × 4 =
  36. 36.10% of 830 =
  37. 37.10% of 660 =
  38. 38.50% of 370 =
  39. 39.16 × 15 =
  40. 40.11 × 18 =

Answer key

  1. 8.7
  2. 34
  3. 6561
  4. 29
  5. 21
  6. 1800
  7. 225
  8. 286
  9. 25
  10. 510
  11. 346
  12. 961
  13. 55.6
  14. 2800
  15. 13
  16. 33.75
  17. 425
  18. 4250
  19. 315
  20. 287
  21. 525
  22. 210
  23. 885
  24. 57.5
  25. 22.5
  26. 93.95
  27. 544
  28. 44
  29. 110.8
  30. 23
  31. 10
  32. 3000
  33. 510
  34. 207
  35. 200
  36. 83
  37. 66
  38. 185
  39. 240
  40. 198

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