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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 730 · 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. 1.1000 ÷ 50 =
  2. 2.11 × 16 =
  3. 3.179 + 38 =
  4. 4.1400 ÷ 25 =
  5. 5.50% of 600 =
  6. 6.Best estimate of 497 × 8? (a) 40000 (b) 4000 (c) 400 (d) 8000
  7. 7.15% of 840 =
  8. 8.50% of 900 =
  9. 9.9 × 15 =
  10. 10.95 × 50 =
  11. 11.53 × 4 =
  12. 12.29 + 26 + 50 + 81 =
  13. 13.165 ÷ 5 =
  14. 14.316 + 19 =
  15. 15.1% of 640 =
  16. 16.₹29.55 + ₹15.75 =
  17. 17.1050 ÷ 50 =
  18. 18.Best estimate of 18 × 32? (a) 6000 (b) 1200 (c) 600 (d) 60
  19. 19.39² =
  20. 20.31² =
  21. 21.15 + 63 + 58 + 27 =
  22. 22.118 − 26 =
  23. 23.5 + 1 + 3 + 5 =
  24. 24.14 × 11 =
  25. 25.51 × 4 =
  26. 26.303 − 19 =
  27. 27.81² =
  28. 28.19² =
  29. 29.1% of 740 =
  30. 30.₹55.80 − ₹8.15 =
  31. 31.365 + 28 =
  32. 32.Best estimate of 899 × 4? (a) 36000 (b) 7200 (c) 3600 (d) 360
  33. 33.368 + 77 =
  34. 34.9 + 2 + 6 + 1 =
  35. 35.295 − 98 =
  36. 36.211 − 27 =
  37. 37.51 × 8 =
  38. 38.950 ÷ 50 =
  39. 39.530 − 17 =
  40. 40.71 + 29 + 13 + 52 =

Answer key

  1. 20
  2. 176
  3. 217
  4. 56
  5. 300
  6. 4000
  7. 126
  8. 450
  9. 135
  10. 4750
  11. 212
  12. 186
  13. 33
  14. 335
  15. 6.4
  16. 45.3
  17. 21
  18. 600
  19. 1521
  20. 961
  21. 163
  22. 92
  23. 14
  24. 154
  25. 204
  26. 284
  27. 6561
  28. 361
  29. 7.4
  30. 47.65
  31. 393
  32. 3600
  33. 445
  34. 18
  35. 197
  36. 184
  37. 408
  38. 19
  39. 513
  40. 165

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