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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 310 · 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. 1.432 − 47 =
  2. 2.27 + 83 + 27 + 29 =
  3. 3.Best estimate of 89 × 29? (a) 5400 (b) 270 (c) 27000 (d) 2700
  4. 4.9 + 4 + 4 + 6 =
  5. 5.337 − 36 =
  6. 6.20% of 120 =
  7. 7.86 × 5 =
  8. 8.362 − 67 =
  9. 9.21² =
  10. 10.427 − 86 =
  11. 11.6 × 15 =
  12. 12.76 × 50 =
  13. 13.13 + 23 + 39 + 49 =
  14. 14.20 × 5 =
  15. 15.12 × 12 =
  16. 16.213 + 38 =
  17. 17.50 × 15 =
  18. 18.Check with nines: 32 × 29 = 928. Correct or wrong? (a) wrong (b) correct
  19. 19.137 − 76 =
  20. 20.8 + 8 + 4 + 2 =
  21. 21.89 + 25 + 86 + 24 =
  22. 22.8 + 3 + 9 + 7 =
  23. 23.Best estimate of 97 × 9? (a) 9000 (b) 90 (c) 1800 (d) 900
  24. 24.6 + 5 + 5 + 7 =
  25. 25.17 × 15 =
  26. 26.₹57.25 + ₹8.90 =
  27. 27.3 + 1 + 6 + 4 =
  28. 28.₹76.65 − ₹16.90 =
  29. 29.8 + 2 + 8 + 3 + 8 =
  30. 30.1400 ÷ 25 =
  31. 31.Check with nines: 31 × 79 = 2454. Correct or wrong? (a) correct (b) wrong
  32. 32.18 × 15 =
  33. 33.49 × 15 =
  34. 34.19 × 12 =
  35. 35.324 − 46 =
  36. 36.13 + 15 + 53 + 73 =
  37. 37.19 × 15 =
  38. 38.33 × 8 =
  39. 39.126 + 38 =
  40. 40.7 + 6 + 3 + 8 + 4 =

Answer key

  1. 385
  2. 166
  3. 2700
  4. 23
  5. 301
  6. 24
  7. 430
  8. 295
  9. 441
  10. 341
  11. 90
  12. 3800
  13. 124
  14. 100
  15. 144
  16. 251
  17. 750
  18. correct
  19. 61
  20. 22
  21. 224
  22. 27
  23. 900
  24. 23
  25. 255
  26. 66.15
  27. 14
  28. 59.75
  29. 29
  30. 56
  31. wrong
  32. 270
  33. 735
  34. 228
  35. 278
  36. 154
  37. 285
  38. 264
  39. 164
  40. 28

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