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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 583 · 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. 1.61² =
  2. 2.Best estimate of 71 × 92? (a) 630 (b) 63000 (c) 12600 (d) 6300
  3. 3.22 × 15 =
  4. 4.1% of 470 =
  5. 5.40 × 15 =
  6. 6.62 × 15 =
  7. 7.329 + 47 =
  8. 8.Best estimate of 599 × 4? (a) 24000 (b) 240 (c) 4800 (d) 2400
  9. 9.20 × 5 =
  10. 10.Best estimate of 99 × 8? (a) 80 (b) 1600 (c) 800 (d) 8000
  11. 11.79² =
  12. 12.Best estimate of 71 × 32? (a) 210 (b) 4200 (c) 21000 (d) 2100
  13. 13.425 + 28 =
  14. 14.1150 ÷ 25 =
  15. 15.45 × 5 =
  16. 16.79 × 50 =
  17. 17.435 ÷ 5 =
  18. 18.76 × 4 =
  19. 19.36 × 5 =
  20. 20.1800 ÷ 50 =
  21. 21.200 ÷ 25 =
  22. 22.15% of 250 =
  23. 23.347 + 69 =
  24. 24.1100 ÷ 50 =
  25. 25.11 × 15 =
  26. 26.₹67.80 + ₹23.30 =
  27. 27.54 × 4 =
  28. 28.550 ÷ 50 =
  29. 29.194 + 39 =
  30. 30.17 + 11 + 12 + 89 =
  31. 31.1 + 4 + 7 + 9 + 7 =
  32. 32.35 + 19 + 33 + 18 =
  33. 33.1% of 760 =
  34. 34.50% of 770 =
  35. 35.1 + 9 + 2 + 9 =
  36. 36.31 × 50 =
  37. 37.89 × 50 =
  38. 38.139 × 4 =
  39. 39.220 ÷ 5 =
  40. 40.191 − 86 =

Answer key

  1. 3721
  2. 6300
  3. 330
  4. 4.7
  5. 600
  6. 930
  7. 376
  8. 2400
  9. 100
  10. 800
  11. 6241
  12. 2100
  13. 453
  14. 46
  15. 225
  16. 3950
  17. 87
  18. 304
  19. 180
  20. 36
  21. 8
  22. 37.5
  23. 416
  24. 22
  25. 165
  26. 91.1
  27. 216
  28. 11
  29. 233
  30. 129
  31. 28
  32. 105
  33. 7.6
  34. 385
  35. 21
  36. 1550
  37. 4450
  38. 556
  39. 44
  40. 105

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