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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 927 · 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. 1.57 × 15 =
  2. 2.12 × 11 =
  3. 3.1800 ÷ 50 =
  4. 4.25% of 520 =
  5. 5.8 + 3 + 1 + 2 =
  6. 6.46 + 34 + 83 + 79 =
  7. 7.43 × 50 =
  8. 8.10% of 830 =
  9. 9.15 × 14 =
  10. 10.22 × 50 =
  11. 11.83 × 5 =
  12. 12.402 + 47 =
  13. 13.10% of 150 =
  14. 14.93 × 5 =
  15. 15.₹76.45 − ₹18.90 =
  16. 16.₹61.35 − ₹7.05 =
  17. 17.15% of 450 =
  18. 18.Best estimate of 92 × 22? (a) 18000 (b) 3600 (c) 1800 (d) 180
  19. 19.12 × 8 =
  20. 20.16 × 12 =
  21. 21.27 × 15 =
  22. 22.14 × 19 =
  23. 23.42 × 4 =
  24. 24.38 × 15 =
  25. 25.483 − 88 =
  26. 26.67 × 50 =
  27. 27.10% of 260 =
  28. 28.83 + 16 + 12 + 51 =
  29. 29.16 × 5 =
  30. 30.₹31.85 + ₹27.15 =
  31. 31.Best estimate of 88 × 32? (a) 2700 (b) 270 (c) 27000 (d) 5400
  32. 32.21² =
  33. 33.5% of 280 =
  34. 34.Best estimate of 91 × 32? (a) 5400 (b) 27000 (c) 2700 (d) 270
  35. 35.155 − 18 =
  36. 36.12 × 18 =
  37. 37.Check with nines: 89 × 59 = 5257. Correct or wrong? (a) wrong (b) correct
  38. 38.41² =
  39. 39.12 × 17 =
  40. 40.₹5.35 + ₹41.50 =

Answer key

  1. 855
  2. 132
  3. 36
  4. 130
  5. 14
  6. 242
  7. 2150
  8. 83
  9. 210
  10. 1100
  11. 415
  12. 449
  13. 15
  14. 465
  15. 57.55
  16. 54.3
  17. 67.5
  18. 1800
  19. 96
  20. 192
  21. 405
  22. 266
  23. 168
  24. 570
  25. 395
  26. 3350
  27. 26
  28. 162
  29. 80
  30. 59
  31. 2700
  32. 441
  33. 14
  34. 2700
  35. 137
  36. 216
  37. wrong
  38. 1681
  39. 204
  40. 46.85

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