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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 89 · 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. 1.61 × 5 =
  2. 2.Check with nines: 379 + 586 = 965. Correct or wrong? (a) wrong (b) correct
  3. 3.177 − 17 =
  4. 4.Best estimate of 802 × 8? (a) 6400 (b) 12800 (c) 640 (d) 64000
  5. 5.15 × 17 =
  6. 6.1800 ÷ 50 =
  7. 7.48 × 8 =
  8. 8.Best estimate of 699 × 6? (a) 42000 (b) 8400 (c) 4200 (d) 420
  9. 9.55 × 15 =
  10. 10.₹84.85 + ₹21.15 =
  11. 11.72 − 46 =
  12. 12.₹13.55 + ₹47.85 =
  13. 13.279 − 56 =
  14. 14.14 × 14 =
  15. 15.₹18.30 − ₹8.90 =
  16. 16.37 + 47 =
  17. 17.68 − 37 =
  18. 18.11 × 11 =
  19. 19.246 − 89 =
  20. 20.59² =
  21. 21.1 + 1 + 2 + 9 + 1 =
  22. 22.21² =
  23. 23.39² =
  24. 24.55 + 74 + 42 + 19 =
  25. 25.46 × 8 =
  26. 26.81 × 5 =
  27. 27.124 − 26 =
  28. 28.675 ÷ 25 =
  29. 29.3 + 6 + 8 + 7 + 7 =
  30. 30.15 × 15 =
  31. 31.18 × 13 =
  32. 32.37 × 15 =
  33. 33.50% of 160 =
  34. 34.Best estimate of 802 × 5? (a) 400 (b) 8000 (c) 4000 (d) 40000
  35. 35.6 + 4 + 5 + 5 + 9 =
  36. 36.323 + 18 =
  37. 37.10% of 400 =
  38. 38.2 + 5 + 8 + 8 + 3 =
  39. 39.72 × 5 =
  40. 40.72 × 50 =

Answer key

  1. 305
  2. correct
  3. 160
  4. 6400
  5. 255
  6. 36
  7. 384
  8. 4200
  9. 825
  10. 106
  11. 26
  12. 61.4
  13. 223
  14. 196
  15. 9.4
  16. 84
  17. 31
  18. 121
  19. 157
  20. 3481
  21. 14
  22. 441
  23. 1521
  24. 190
  25. 368
  26. 405
  27. 98
  28. 27
  29. 31
  30. 225
  31. 234
  32. 555
  33. 80
  34. 4000
  35. 29
  36. 341
  37. 40
  38. 26
  39. 360
  40. 3600

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