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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 875 · 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. 1.157 − 76 =
  2. 2.Check with nines: 512 + 385 = 897. Correct or wrong? (a) correct (b) wrong
  3. 3.50% of 440 =
  4. 4.10% of 110 =
  5. 5.17 × 17 =
  6. 6.10% of 490 =
  7. 7.20% of 470 =
  8. 8.Best estimate of 198 × 3? (a) 6000 (b) 60 (c) 600 (d) 1200
  9. 9.235 − 96 =
  10. 10.62 × 15 =
  11. 11.7 + 8 + 2 + 5 + 3 =
  12. 12.78 + 80 + 11 + 45 =
  13. 13.19 × 14 =
  14. 14.14 × 19 =
  15. 15.12 + 22 + 67 + 24 =
  16. 16.Best estimate of 201 × 3? (a) 60 (b) 1200 (c) 6000 (d) 600
  17. 17.25% of 180 =
  18. 18.56 × 50 =
  19. 19.60 × 4 =
  20. 20.73 + 83 + 74 + 33 =
  21. 21.81² =
  22. 22.20% of 180 =
  23. 23.49² =
  24. 24.49² =
  25. 25.229 + 19 =
  26. 26.347 + 27 =
  27. 27.2 + 5 + 5 + 5 =
  28. 28.12 × 17 =
  29. 29.Check with nines: 47 × 63 = 2963. Correct or wrong? (a) correct (b) wrong
  30. 30.Check with nines: 449 + 195 = 644. Correct or wrong? (a) wrong (b) correct
  31. 31.264 − 96 =
  32. 32.60 × 50 =
  33. 33.51 + 19 =
  34. 34.₹34.35 − ₹26.85 =
  35. 35.25 × 5 =
  36. 36.418 + 58 =
  37. 37.409 − 28 =
  38. 38.₹69.60 + ₹25.55 =
  39. 39.11 × 14 =
  40. 40.89² =

Answer key

  1. 81
  2. correct
  3. 220
  4. 11
  5. 289
  6. 49
  7. 94
  8. 600
  9. 139
  10. 930
  11. 25
  12. 214
  13. 266
  14. 266
  15. 125
  16. 600
  17. 45
  18. 2800
  19. 240
  20. 263
  21. 6561
  22. 36
  23. 2401
  24. 2401
  25. 248
  26. 374
  27. 17
  28. 204
  29. wrong
  30. correct
  31. 168
  32. 3000
  33. 70
  34. 7.5
  35. 125
  36. 476
  37. 381
  38. 95.15
  39. 154
  40. 7921

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