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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 82 · 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. 1.2 + 4 + 2 + 6 + 2 =
  2. 2.21² =
  3. 3.25% of 400 =
  4. 4.10% of 430 =
  5. 5.50 × 5 =
  6. 6.25% of 690 =
  7. 7.12 × 15 =
  8. 8.262 − 68 =
  9. 9.12 × 17 =
  10. 10.7 + 5 + 7 + 3 + 7 =
  11. 11.₹16.80 − ₹11.90 =
  12. 12.130 × 4 =
  13. 13.11 × 17 =
  14. 14.32 × 8 =
  15. 15.1 + 9 + 8 + 2 =
  16. 16.₹75.40 + ₹10.50 =
  17. 17.19 × 18 =
  18. 18.396 − 67 =
  19. 19.Best estimate of 41 × 89? (a) 7200 (b) 360 (c) 36000 (d) 3600
  20. 20.25 × 50 =
  21. 21.311 + 18 =
  22. 22.52 + 19 + 22 + 40 =
  23. 23.Best estimate of 71 × 69? (a) 9800 (b) 49000 (c) 490 (d) 4900
  24. 24.68 + 77 + 39 + 26 =
  25. 25.18 × 18 =
  26. 26.₹41.65 + ₹3.80 =
  27. 27.371 − 66 =
  28. 28.74 × 8 =
  29. 29.10% of 90 =
  30. 30.15 × 12 =
  31. 31.282 − 19 =
  32. 32.3 + 7 + 1 + 7 =
  33. 33.750 ÷ 50 =
  34. 34.6 + 4 + 8 + 5 =
  35. 35.296 − 67 =
  36. 36.3 + 2 + 6 + 7 =
  37. 37.Check with nines: 96 × 82 = 7873. Correct or wrong? (a) wrong (b) correct
  38. 38.56 + 48 =
  39. 39.₹27.75 + ₹40.25 =
  40. 40.375 + 19 =

Answer key

  1. 16
  2. 441
  3. 100
  4. 43
  5. 250
  6. 172.5
  7. 180
  8. 194
  9. 204
  10. 29
  11. 4.9
  12. 520
  13. 187
  14. 256
  15. 20
  16. 85.9
  17. 342
  18. 329
  19. 3600
  20. 1250
  21. 329
  22. 133
  23. 4900
  24. 210
  25. 324
  26. 45.45
  27. 305
  28. 592
  29. 9
  30. 180
  31. 263
  32. 18
  33. 15
  34. 23
  35. 229
  36. 18
  37. wrong
  38. 104
  39. 68
  40. 394

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