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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 419 · 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.₹61.30 + ₹14.90 =
  2. 2.33 × 50 =
  3. 3.68 + 74 + 27 + 74 =
  4. 4.₹19.05 + ₹4.40 =
  5. 5.1400 ÷ 50 =
  6. 6.13 × 19 =
  7. 7.72 × 50 =
  8. 8.19² =
  9. 9.11 × 14 =
  10. 10.₹93.70 + ₹14.55 =
  11. 11.76 + 87 =
  12. 12.₹79.05 + ₹8.30 =
  13. 13.1425 ÷ 25 =
  14. 14.785 ÷ 5 =
  15. 15.15 × 12 =
  16. 16.563 − 27 =
  17. 17.390 + 79 =
  18. 18.4 + 6 + 2 + 4 =
  19. 19.55 + 51 + 15 + 33 =
  20. 20.89 × 4 =
  21. 21.73 × 8 =
  22. 22.Check with nines: 662 + 160 = 822. Correct or wrong? (a) correct (b) wrong
  23. 23.30 × 15 =
  24. 24.425 ÷ 5 =
  25. 25.91² =
  26. 26.6 + 1 + 4 + 7 + 8 =
  27. 27.420 + 18 =
  28. 28.225 − 58 =
  29. 29.479 − 78 =
  30. 30.12 × 12 =
  31. 31.315 + 27 =
  32. 32.19 × 16 =
  33. 33.81² =
  34. 34.32 + 88 + 27 + 65 =
  35. 35.₹23.25 + ₹26.70 =
  36. 36.17 × 14 =
  37. 37.Best estimate of 32 × 82? (a) 240 (b) 4800 (c) 24000 (d) 2400
  38. 38.48 × 8 =
  39. 39.55 × 5 =
  40. 40.65 × 8 =

Answer key

  1. 76.2
  2. 1650
  3. 243
  4. 23.45
  5. 28
  6. 247
  7. 3600
  8. 361
  9. 154
  10. 108.25
  11. 163
  12. 87.35
  13. 57
  14. 157
  15. 180
  16. 536
  17. 469
  18. 16
  19. 154
  20. 356
  21. 584
  22. correct
  23. 450
  24. 85
  25. 8281
  26. 26
  27. 438
  28. 167
  29. 401
  30. 144
  31. 342
  32. 304
  33. 6561
  34. 212
  35. 49.95
  36. 238
  37. 2400
  38. 384
  39. 275
  40. 520

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