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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 31 · 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. 1.29² =
  2. 2.160 + 28 =
  3. 3.51 + 84 + 49 + 40 =
  4. 4.Check with nines: 75 × 38 = 2846. Correct or wrong? (a) correct (b) wrong
  5. 5.₹67.55 − ₹13.75 =
  6. 6.Best estimate of 99 × 5? (a) 500 (b) 1000 (c) 5000 (d) 50
  7. 7.44 × 15 =
  8. 8.140 − 19 =
  9. 9.8 + 4 + 5 + 6 + 4 =
  10. 10.17 × 17 =
  11. 11.19 × 13 =
  12. 12.8 + 4 + 6 + 4 + 6 =
  13. 13.80 ÷ 5 =
  14. 14.₹8.80 + ₹7.75 =
  15. 15.₹57.50 + ₹40.85 =
  16. 16.58 × 15 =
  17. 17.39 × 50 =
  18. 18.89² =
  19. 19.Check with nines: 33 × 15 = 495. Correct or wrong? (a) wrong (b) correct
  20. 20.394 − 19 =
  21. 21.405 − 89 =
  22. 22.49² =
  23. 23.1 + 9 + 6 + 7 + 8 =
  24. 24.₹94.85 − ₹10.15 =
  25. 25.1125 ÷ 25 =
  26. 26.72 + 60 + 44 + 46 =
  27. 27.130 × 4 =
  28. 28.353 − 29 =
  29. 29.91 × 4 =
  30. 30.20% of 350 =
  31. 31.19 × 13 =
  32. 32.2 + 1 + 9 + 6 =
  33. 33.25% of 780 =
  34. 34.493 − 38 =
  35. 35.11 × 15 =
  36. 36.59² =
  37. 37.1 + 3 + 7 + 3 =
  38. 38.34 × 5 =
  39. 39.620 ÷ 5 =
  40. 40.8 + 9 + 3 + 6 + 7 =

Answer key

  1. 841
  2. 188
  3. 224
  4. wrong
  5. 53.8
  6. 500
  7. 660
  8. 121
  9. 27
  10. 289
  11. 247
  12. 28
  13. 16
  14. 16.55
  15. 98.35
  16. 870
  17. 1950
  18. 7921
  19. correct
  20. 375
  21. 316
  22. 2401
  23. 31
  24. 84.7
  25. 45
  26. 222
  27. 520
  28. 324
  29. 364
  30. 70
  31. 247
  32. 18
  33. 195
  34. 455
  35. 165
  36. 3481
  37. 14
  38. 170
  39. 124
  40. 33

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