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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 688 · 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. 1.96 × 4 =
  2. 2.4 × 15 =
  3. 3.18 × 17 =
  4. 4.14 × 18 =
  5. 5.₹35.70 + ₹9.75 =
  6. 6.8 + 2 + 7 + 2 =
  7. 7.470 − 18 =
  8. 8.472 − 68 =
  9. 9.74 × 50 =
  10. 10.239 + 87 =
  11. 11.₹99.05 − ₹38.80 =
  12. 12.19² =
  13. 13.Best estimate of 58 × 28? (a) 3600 (b) 180 (c) 1800 (d) 18000
  14. 14.Best estimate of 902 × 4? (a) 360 (b) 7200 (c) 3600 (d) 36000
  15. 15.Best estimate of 401 × 3? (a) 12000 (b) 2400 (c) 120 (d) 1200
  16. 16.₹15.70 + ₹21.70 =
  17. 17.88 × 5 =
  18. 18.15 × 16 =
  19. 19.435 − 79 =
  20. 20.71 × 50 =
  21. 21.50% of 230 =
  22. 22.383 − 88 =
  23. 23.119 × 4 =
  24. 24.1350 ÷ 25 =
  25. 25.₹68.80 + ₹2.65 =
  26. 26.₹45.65 − ₹41.60 =
  27. 27.88 + 15 + 89 + 53 =
  28. 28.40 + 81 + 11 + 56 =
  29. 29.₹88.30 + ₹19.65 =
  30. 30.34 × 4 =
  31. 31.50% of 150 =
  32. 32.28 × 4 =
  33. 33.124 + 67 =
  34. 34.27 × 15 =
  35. 35.138 − 18 =
  36. 36.Check with nines: 225 + 846 = 1072. Correct or wrong? (a) wrong (b) correct
  37. 37.15% of 860 =
  38. 38.Best estimate of 21 × 31? (a) 600 (b) 1200 (c) 6000 (d) 60
  39. 39.333 − 58 =
  40. 40.13 × 19 =

Answer key

  1. 384
  2. 60
  3. 306
  4. 252
  5. 45.45
  6. 19
  7. 452
  8. 404
  9. 3700
  10. 326
  11. 60.25
  12. 361
  13. 1800
  14. 3600
  15. 1200
  16. 37.4
  17. 440
  18. 240
  19. 356
  20. 3550
  21. 115
  22. 295
  23. 476
  24. 54
  25. 71.45
  26. 4.05
  27. 245
  28. 188
  29. 107.95
  30. 136
  31. 75
  32. 112
  33. 191
  34. 405
  35. 120
  36. wrong
  37. 129
  38. 600
  39. 275
  40. 247

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