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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 660 · 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 750 =
  2. 2.82 + 42 + 15 + 37 =
  3. 3.39 + 15 + 80 + 22 =
  4. 4.600 ÷ 50 =
  5. 5.3 + 1 + 3 + 7 =
  6. 6.₹32.45 + ₹22.25 =
  7. 7.13 + 78 + 78 + 46 =
  8. 8.₹46.15 + ₹14.10 =
  9. 9.Best estimate of 199 × 6? (a) 2400 (b) 120 (c) 1200 (d) 12000
  10. 10.50 × 5 =
  11. 11.91² =
  12. 12.2 + 5 + 5 + 3 =
  13. 13.35 × 15 =
  14. 14.₹14.35 + ₹14.65 =
  15. 15.66 × 50 =
  16. 16.60 × 4 =
  17. 17.Check with nines: 13 × 68 = 887. Correct or wrong? (a) wrong (b) correct
  18. 18.187 − 68 =
  19. 19.47 + 13 + 32 + 39 =
  20. 20.Check with nines: 16 × 89 = 1424. Correct or wrong? (a) wrong (b) correct
  21. 21.444 + 98 =
  22. 22.18 × 16 =
  23. 23.Best estimate of 41 × 81? (a) 6400 (b) 3200 (c) 32000 (d) 320
  24. 24.19² =
  25. 25.110 + 89 =
  26. 26.56 × 8 =
  27. 27.16 × 15 =
  28. 28.349 + 48 =
  29. 29.14 × 15 =
  30. 30.10% of 520 =
  31. 31.39 + 38 + 59 + 11 =
  32. 32.36 × 15 =
  33. 33.21² =
  34. 34.195 − 57 =
  35. 35.62 × 50 =
  36. 36.₹18.60 + ₹20.20 =
  37. 37.30 × 4 =
  38. 38.71² =
  39. 39.69² =
  40. 40.49² =

Answer key

  1. 187.5
  2. 176
  3. 156
  4. 12
  5. 14
  6. 54.7
  7. 215
  8. 60.25
  9. 1200
  10. 250
  11. 8281
  12. 15
  13. 525
  14. 29
  15. 3300
  16. 240
  17. wrong
  18. 119
  19. 131
  20. correct
  21. 542
  22. 288
  23. 3200
  24. 361
  25. 199
  26. 448
  27. 240
  28. 397
  29. 210
  30. 52
  31. 147
  32. 540
  33. 441
  34. 138
  35. 3100
  36. 38.8
  37. 120
  38. 5041
  39. 4761
  40. 2401

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