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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 726 · 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. 1.430 − 68 =
  2. 2.24 × 15 =
  3. 3.62 + 89 + 23 + 74 =
  4. 4.₹28.65 + ₹27.25 =
  5. 5.14 × 5 =
  6. 6.576 − 68 =
  7. 7.217 + 97 =
  8. 8.₹75.10 − ₹35.55 =
  9. 9.52 × 8 =
  10. 10.71² =
  11. 11.21 × 4 =
  12. 12.105 − 16 =
  13. 13.₹16.25 − ₹3.90 =
  14. 14.481 − 48 =
  15. 15.₹47.20 − ₹21.70 =
  16. 16.₹41.70 − ₹25.65 =
  17. 17.15% of 300 =
  18. 18.7 + 8 + 2 + 1 + 3 =
  19. 19.129 − 98 =
  20. 20.34 × 50 =
  21. 21.81 + 38 + 49 + 45 =
  22. 22.₹30.65 − ₹15.70 =
  23. 23.Best estimate of 598 × 8? (a) 480 (b) 9600 (c) 48000 (d) 4800
  24. 24.73 × 8 =
  25. 25.Check with nines: 27 × 16 = 431. Correct or wrong? (a) wrong (b) correct
  26. 26.444 − 19 =
  27. 27.2 + 6 + 6 + 8 =
  28. 28.8 + 7 + 8 + 2 =
  29. 29.9 + 8 + 9 + 1 =
  30. 30.3 + 4 + 2 + 6 =
  31. 31.91² =
  32. 32.2 + 6 + 8 + 8 + 8 =
  33. 33.2000 ÷ 50 =
  34. 34.19 × 11 =
  35. 35.8 + 9 + 2 + 9 =
  36. 36.125 ÷ 25 =
  37. 37.19 × 12 =
  38. 38.111 + 19 =
  39. 39.Check with nines: 84 × 48 = 4032. Correct or wrong? (a) correct (b) wrong
  40. 40.1500 ÷ 25 =

Answer key

  1. 362
  2. 360
  3. 248
  4. 55.9
  5. 70
  6. 508
  7. 314
  8. 39.55
  9. 416
  10. 5041
  11. 84
  12. 89
  13. 12.35
  14. 433
  15. 25.5
  16. 16.05
  17. 45
  18. 21
  19. 31
  20. 1700
  21. 213
  22. 14.95
  23. 4800
  24. 584
  25. wrong
  26. 425
  27. 22
  28. 25
  29. 27
  30. 15
  31. 8281
  32. 32
  33. 40
  34. 209
  35. 28
  36. 5
  37. 228
  38. 130
  39. correct
  40. 60

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