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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 18 · 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. 1.560 − 27 =
  2. 2.20% of 810 =
  3. 3.477 + 89 =
  4. 4.41² =
  5. 5.309 + 19 =
  6. 6.16 × 5 =
  7. 7.775 ÷ 25 =
  8. 8.1425 ÷ 25 =
  9. 9.64 × 8 =
  10. 10.2 + 2 + 4 + 8 + 3 =
  11. 11.17 + 32 + 32 + 14 =
  12. 12.52 + 83 + 85 + 21 =
  13. 13.825 ÷ 5 =
  14. 14.₹68.65 − ₹7.20 =
  15. 15.275 ÷ 25 =
  16. 16.Best estimate of 39 × 88? (a) 3600 (b) 360 (c) 7200 (d) 36000
  17. 17.272 − 79 =
  18. 18.90 × 5 =
  19. 19.50% of 480 =
  20. 20.3 + 6 + 6 + 4 + 7 =
  21. 21.115 − 17 =
  22. 22.50% of 430 =
  23. 23.495 + 19 =
  24. 24.₹12.15 + ₹11.45 =
  25. 25.46 × 5 =
  26. 26.560 ÷ 5 =
  27. 27.₹96.05 + ₹35.25 =
  28. 28.78 × 4 =
  29. 29.71 + 69 + 64 + 80 =
  30. 30.86 + 12 + 14 + 44 =
  31. 31.Best estimate of 82 × 91? (a) 720 (b) 14400 (c) 72000 (d) 7200
  32. 32.5% of 550 =
  33. 33.16 × 4 =
  34. 34.Best estimate of 499 × 5? (a) 250 (b) 2500 (c) 5000 (d) 25000
  35. 35.51 × 15 =
  36. 36.252 − 18 =
  37. 37.85 + 28 =
  38. 38.425 + 69 =
  39. 39.Check with nines: 427 + 475 = 902. Correct or wrong? (a) correct (b) wrong
  40. 40.52 × 15 =

Answer key

  1. 533
  2. 162
  3. 566
  4. 1681
  5. 328
  6. 80
  7. 31
  8. 57
  9. 512
  10. 19
  11. 95
  12. 241
  13. 165
  14. 61.45
  15. 11
  16. 3600
  17. 193
  18. 450
  19. 240
  20. 26
  21. 98
  22. 215
  23. 514
  24. 23.6
  25. 230
  26. 112
  27. 131.3
  28. 312
  29. 284
  30. 156
  31. 7200
  32. 27.5
  33. 64
  34. 2500
  35. 765
  36. 234
  37. 113
  38. 494
  39. correct
  40. 780

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