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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 166 · 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. 1.25% of 630 =
  2. 2.28 × 15 =
  3. 3.41 + 37 + 32 + 88 =
  4. 4.430 − 58 =
  5. 5.15% of 210 =
  6. 6.3 + 8 + 7 + 3 =
  7. 7.97 × 50 =
  8. 8.46 × 4 =
  9. 9.17 × 19 =
  10. 10.9 + 9 + 1 + 6 + 4 =
  11. 11.48 × 15 =
  12. 12.25 × 4 =
  13. 13.332 + 79 =
  14. 14.Best estimate of 29 × 68? (a) 4200 (b) 2100 (c) 210 (d) 21000
  15. 15.50% of 640 =
  16. 16.3 + 2 + 4 + 3 + 7 =
  17. 17.262 + 19 =
  18. 18.24 × 50 =
  19. 19.61² =
  20. 20.97 + 79 =
  21. 21.154 × 4 =
  22. 22.₹18.50 − ₹7.25 =
  23. 23.503 − 78 =
  24. 24.Best estimate of 19 × 61? (a) 1200 (b) 120 (c) 2400 (d) 12000
  25. 25.₹6.05 + ₹49.35 =
  26. 26.59² =
  27. 27.9 + 2 + 4 + 6 + 5 =
  28. 28.217 − 36 =
  29. 29.4 + 6 + 6 + 6 =
  30. 30.42 × 15 =
  31. 31.97 × 50 =
  32. 32.33 + 45 + 14 + 12 =
  33. 33.7 + 2 + 8 + 7 + 4 =
  34. 34.60 + 19 + 51 + 64 =
  35. 35.86 + 55 + 32 + 62 =
  36. 36.11 × 11 =
  37. 37.59² =
  38. 38.15 × 11 =
  39. 39.₹47.20 − ₹37.75 =
  40. 40.85 × 50 =

Answer key

  1. 157.5
  2. 420
  3. 198
  4. 372
  5. 31.5
  6. 21
  7. 4850
  8. 184
  9. 323
  10. 29
  11. 720
  12. 100
  13. 411
  14. 2100
  15. 320
  16. 19
  17. 281
  18. 1200
  19. 3721
  20. 176
  21. 616
  22. 11.25
  23. 425
  24. 1200
  25. 55.4
  26. 3481
  27. 26
  28. 181
  29. 22
  30. 630
  31. 4850
  32. 104
  33. 28
  34. 194
  35. 235
  36. 121
  37. 3481
  38. 165
  39. 9.45
  40. 4250

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