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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 607 · 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. 1.62 × 5 =
  2. 2.₹18.65 − ₹7.45 =
  3. 3.15 × 14 =
  4. 4.23 × 8 =
  5. 5.Best estimate of 29 × 29? (a) 1800 (b) 900 (c) 90 (d) 9000
  6. 6.57 + 47 + 85 + 86 =
  7. 7.18 × 12 =
  8. 8.5 + 5 + 3 + 6 + 4 =
  9. 9.5 + 6 + 4 + 4 + 6 =
  10. 10.40 × 15 =
  11. 11.348 + 28 =
  12. 12.4 + 6 + 4 + 3 =
  13. 13.Check with nines: 471 + 627 = 1098. Correct or wrong? (a) wrong (b) correct
  14. 14.18 × 15 =
  15. 15.70 × 5 =
  16. 16.384 + 37 =
  17. 17.2 + 1 + 9 + 5 =
  18. 18.11 × 11 =
  19. 19.333 + 87 =
  20. 20.211 − 46 =
  21. 21.41² =
  22. 22.10% of 480 =
  23. 23.83 × 5 =
  24. 24.68 + 73 + 31 + 76 =
  25. 25.67 + 58 =
  26. 26.29² =
  27. 27.418 + 97 =
  28. 28.2 + 7 + 3 + 6 + 8 =
  29. 29.45 × 5 =
  30. 30.39 + 57 + 73 + 89 =
  31. 31.40 × 50 =
  32. 32.76 − 49 =
  33. 33.8 + 7 + 3 + 7 + 7 =
  34. 34.23 × 15 =
  35. 35.₹59.70 − ₹17.90 =
  36. 36.96 × 4 =
  37. 37.Check with nines: 333 + 183 = 516. Correct or wrong? (a) wrong (b) correct
  38. 38.₹98.55 + ₹2.40 =
  39. 39.73 + 88 + 81 + 88 =
  40. 40.537 − 26 =

Answer key

  1. 310
  2. 11.2
  3. 210
  4. 184
  5. 900
  6. 275
  7. 216
  8. 23
  9. 25
  10. 600
  11. 376
  12. 17
  13. correct
  14. 270
  15. 350
  16. 421
  17. 17
  18. 121
  19. 420
  20. 165
  21. 1681
  22. 48
  23. 415
  24. 248
  25. 125
  26. 841
  27. 515
  28. 26
  29. 225
  30. 258
  31. 2000
  32. 27
  33. 32
  34. 345
  35. 41.8
  36. 384
  37. correct
  38. 100.95
  39. 330
  40. 511

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