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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 814 · 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. 1.365 + 78 =
  2. 2.6 + 3 + 7 + 7 + 3 =
  3. 3.14 × 19 =
  4. 4.Check with nines: 89 × 77 = 6853. Correct or wrong? (a) correct (b) wrong
  5. 5.Check with nines: 74 × 99 = 7326. Correct or wrong? (a) correct (b) wrong
  6. 6.130 ÷ 5 =
  7. 7.Best estimate of 91 × 22? (a) 180 (b) 1800 (c) 18000 (d) 3600
  8. 8.25% of 330 =
  9. 9.₹45.10 + ₹45.85 =
  10. 10.17 × 50 =
  11. 11.425 + 79 =
  12. 12.14 + 71 + 89 + 21 =
  13. 13.65 × 5 =
  14. 14.5% of 830 =
  15. 15.12 × 15 =
  16. 16.₹59.15 + ₹12.30 =
  17. 17.23 × 15 =
  18. 18.89 × 50 =
  19. 19.325 ÷ 25 =
  20. 20.53 × 15 =
  21. 21.49 × 4 =
  22. 22.223 + 38 =
  23. 23.178 + 69 =
  24. 24.6 + 4 + 6 + 2 + 1 =
  25. 25.1175 ÷ 25 =
  26. 26.408 − 56 =
  27. 27.45 × 8 =
  28. 28.230 − 56 =
  29. 29.41² =
  30. 30.35 × 15 =
  31. 31.79² =
  32. 32.56 × 5 =
  33. 33.₹29.25 + ₹20.25 =
  34. 34.Check with nines: 90 × 87 = 7830. Correct or wrong? (a) wrong (b) correct
  35. 35.₹66.55 + ₹10.15 =
  36. 36.59² =
  37. 37.15 × 11 =
  38. 38.21 × 15 =
  39. 39.41 + 68 =
  40. 40.46 × 15 =

Answer key

  1. 443
  2. 26
  3. 266
  4. correct
  5. correct
  6. 26
  7. 1800
  8. 82.5
  9. 90.95
  10. 850
  11. 504
  12. 195
  13. 325
  14. 41.5
  15. 180
  16. 71.45
  17. 345
  18. 4450
  19. 13
  20. 795
  21. 196
  22. 261
  23. 247
  24. 19
  25. 47
  26. 352
  27. 360
  28. 174
  29. 1681
  30. 525
  31. 6241
  32. 280
  33. 49.5
  34. correct
  35. 76.7
  36. 3481
  37. 165
  38. 315
  39. 109
  40. 690

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