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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 406 · 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. 1.47 × 4 =
  2. 2.91² =
  3. 3.19 × 17 =
  4. 4.489 + 79 =
  5. 5.56 × 8 =
  6. 6.68 + 16 + 57 + 88 =
  7. 7.Best estimate of 301 × 8? (a) 24000 (b) 4800 (c) 240 (d) 2400
  8. 8.5 + 5 + 2 + 7 + 3 =
  9. 9.313 + 49 =
  10. 10.₹97.25 + ₹21.25 =
  11. 11.5 + 4 + 2 + 3 + 8 =
  12. 12.14 × 17 =
  13. 13.52 × 4 =
  14. 14.20% of 260 =
  15. 15.3 + 7 + 3 + 3 =
  16. 16.170 ÷ 5 =
  17. 17.250 ÷ 50 =
  18. 18.47 × 15 =
  19. 19.400 ÷ 50 =
  20. 20.355 − 17 =
  21. 21.2 + 4 + 8 + 3 =
  22. 22.51² =
  23. 23.5 + 8 + 2 + 2 =
  24. 24.₹90.70 − ₹43.25 =
  25. 25.Best estimate of 69 × 38? (a) 2800 (b) 280 (c) 28000 (d) 5600
  26. 26.6 + 2 + 5 + 5 =
  27. 27.1500 ÷ 50 =
  28. 28.1450 ÷ 25 =
  29. 29.₹61.25 + ₹47.40 =
  30. 30.42 × 15 =
  31. 31.386 − 97 =
  32. 32.396 − 66 =
  33. 33.15 × 16 =
  34. 34.204 + 77 =
  35. 35.Check with nines: 27 × 33 = 896. Correct or wrong? (a) correct (b) wrong
  36. 36.28 + 83 + 64 + 42 =
  37. 37.202 + 77 =
  38. 38.Check with nines: 825 + 220 = 1045. Correct or wrong? (a) correct (b) wrong
  39. 39.10% of 50 =
  40. 40.25% of 440 =

Answer key

  1. 188
  2. 8281
  3. 323
  4. 568
  5. 448
  6. 229
  7. 2400
  8. 22
  9. 362
  10. 118.5
  11. 22
  12. 238
  13. 208
  14. 52
  15. 16
  16. 34
  17. 5
  18. 705
  19. 8
  20. 338
  21. 17
  22. 2601
  23. 17
  24. 47.45
  25. 2800
  26. 18
  27. 30
  28. 58
  29. 108.65
  30. 630
  31. 289
  32. 330
  33. 240
  34. 281
  35. wrong
  36. 217
  37. 279
  38. correct
  39. 5
  40. 110

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