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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 879 · 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. 1.492 − 39 =
  2. 2.9 + 9 + 8 + 1 + 2 =
  3. 3.₹53.95 + ₹10.65 =
  4. 4.58 × 8 =
  5. 5.49² =
  6. 6.Best estimate of 42 × 51? (a) 200 (b) 2000 (c) 4000 (d) 20000
  7. 7.269 − 89 =
  8. 8.5% of 360 =
  9. 9.10% of 770 =
  10. 10.7 + 4 + 3 + 1 + 8 =
  11. 11.135 − 49 =
  12. 12.₹56.10 + ₹44.25 =
  13. 13.84 × 50 =
  14. 14.113 + 29 =
  15. 15.88 + 54 + 80 + 26 =
  16. 16.Best estimate of 71 × 82? (a) 11200 (b) 5600 (c) 560 (d) 56000
  17. 17.₹33.35 − ₹21.85 =
  18. 18.₹51.75 − ₹17.60 =
  19. 19.242 + 27 =
  20. 20.548 − 18 =
  21. 21.12 × 17 =
  22. 22.₹61.90 − ₹42.95 =
  23. 23.25% of 790 =
  24. 24.80 + 51 + 66 + 27 =
  25. 25.5 + 1 + 5 + 9 =
  26. 26.₹78.15 + ₹2.75 =
  27. 27.1425 ÷ 25 =
  28. 28.4 × 15 =
  29. 29.Check with nines: 151 + 693 = 848. Correct or wrong? (a) wrong (b) correct
  30. 30.6 + 5 + 5 + 4 =
  31. 31.2 + 7 + 4 + 1 + 6 =
  32. 32.8 + 7 + 8 + 7 + 2 =
  33. 33.15 × 14 =
  34. 34.1% of 800 =
  35. 35.41² =
  36. 36.2 + 1 + 9 + 7 + 6 =
  37. 37.12 × 14 =
  38. 38.401 − 59 =
  39. 39.24 × 50 =
  40. 40.74 × 8 =

Answer key

  1. 453
  2. 29
  3. 64.6
  4. 464
  5. 2401
  6. 2000
  7. 180
  8. 18
  9. 77
  10. 23
  11. 86
  12. 100.35
  13. 4200
  14. 142
  15. 248
  16. 5600
  17. 11.5
  18. 34.15
  19. 269
  20. 530
  21. 204
  22. 18.95
  23. 197.5
  24. 224
  25. 20
  26. 80.9
  27. 57
  28. 60
  29. wrong
  30. 20
  31. 20
  32. 32
  33. 210
  34. 8
  35. 1681
  36. 25
  37. 168
  38. 342
  39. 1200
  40. 592

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