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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 465 · 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. 1.129 × 4 =
  2. 2.9 + 2 + 1 + 1 + 4 =
  3. 3.89² =
  4. 4.26 × 8 =
  5. 5.Best estimate of 88 × 51? (a) 45000 (b) 4500 (c) 9000 (d) 450
  6. 6.240 + 49 =
  7. 7.21 × 15 =
  8. 8.9 × 15 =
  9. 9.50 × 15 =
  10. 10.28 × 5 =
  11. 11.69² =
  12. 12.7 + 4 + 7 + 3 =
  13. 13.Check with nines: 69 × 61 = 4212. Correct or wrong? (a) wrong (b) correct
  14. 14.20% of 900 =
  15. 15.315 − 99 =
  16. 16.89 + 67 =
  17. 17.5% of 20 =
  18. 18.₹29.15 + ₹40.10 =
  19. 19.32 × 15 =
  20. 20.46 × 8 =
  21. 21.20 × 8 =
  22. 22.187 + 29 =
  23. 23.381 + 28 =
  24. 24.₹23.95 + ₹44.10 =
  25. 25.4 × 15 =
  26. 26.360 + 37 =
  27. 27.6 + 7 + 5 + 3 + 5 =
  28. 28.5 + 5 + 4 + 1 + 9 =
  29. 29.34 × 15 =
  30. 30.325 ÷ 5 =
  31. 31.214 − 48 =
  32. 32.1% of 210 =
  33. 33.61 + 32 + 77 + 33 =
  34. 34.468 + 79 =
  35. 35.Check with nines: 833 + 592 = 1425. Correct or wrong? (a) correct (b) wrong
  36. 36.33 × 15 =
  37. 37.14 × 8 =
  38. 38.456 + 89 =
  39. 39.12 × 50 =
  40. 40.25% of 110 =

Answer key

  1. 516
  2. 17
  3. 7921
  4. 208
  5. 4500
  6. 289
  7. 315
  8. 135
  9. 750
  10. 140
  11. 4761
  12. 21
  13. wrong
  14. 180
  15. 216
  16. 156
  17. 1
  18. 69.25
  19. 480
  20. 368
  21. 160
  22. 216
  23. 409
  24. 68.05
  25. 60
  26. 397
  27. 26
  28. 24
  29. 510
  30. 65
  31. 166
  32. 2.1
  33. 203
  34. 547
  35. correct
  36. 495
  37. 112
  38. 545
  39. 600
  40. 27.5

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