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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 638 · 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. 1.49² =
  2. 2.Best estimate of 92 × 21? (a) 180 (b) 3600 (c) 18000 (d) 1800
  3. 3.Check with nines: 28 × 94 = 2632. Correct or wrong? (a) correct (b) wrong
  4. 4.2 + 8 + 5 + 2 + 8 =
  5. 5.₹44.35 − ₹33.95 =
  6. 6.₹37.25 − ₹31.25 =
  7. 7.965 ÷ 5 =
  8. 8.₹58.15 + ₹39.85 =
  9. 9.79² =
  10. 10.344 − 88 =
  11. 11.19 × 12 =
  12. 12.2 + 9 + 8 + 2 + 1 =
  13. 13.29² =
  14. 14.24 × 8 =
  15. 15.96 + 97 =
  16. 16.64 + 29 =
  17. 17.41 × 15 =
  18. 18.4 × 15 =
  19. 19.6 + 4 + 5 + 2 + 5 =
  20. 20.90 + 38 =
  21. 21.3 + 3 + 4 + 7 =
  22. 22.458 − 26 =
  23. 23.24 × 5 =
  24. 24.350 ÷ 25 =
  25. 25.5 + 6 + 4 + 7 + 8 =
  26. 26.5% of 620 =
  27. 27.5% of 450 =
  28. 28.391 + 39 =
  29. 29.8 + 7 + 5 + 6 + 3 =
  30. 30.485 + 48 =
  31. 31.1375 ÷ 25 =
  32. 32.53 × 50 =
  33. 33.14 × 11 =
  34. 34.9 + 9 + 2 + 1 + 6 =
  35. 35.353 + 78 =
  36. 36.319 − 46 =
  37. 37.20 × 8 =
  38. 38.5% of 560 =
  39. 39.7 + 8 + 2 + 6 =
  40. 40.2 + 9 + 5 + 8 + 1 =

Answer key

  1. 2401
  2. 1800
  3. correct
  4. 25
  5. 10.4
  6. 6
  7. 193
  8. 98
  9. 6241
  10. 256
  11. 228
  12. 22
  13. 841
  14. 192
  15. 193
  16. 93
  17. 615
  18. 60
  19. 22
  20. 128
  21. 17
  22. 432
  23. 120
  24. 14
  25. 30
  26. 31
  27. 22.5
  28. 430
  29. 29
  30. 533
  31. 55
  32. 2650
  33. 154
  34. 27
  35. 431
  36. 273
  37. 160
  38. 28
  39. 23
  40. 25

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