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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 562 · 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. 1.75 × 4 =
  2. 2.50 × 50 =
  3. 3.427 − 47 =
  4. 4.316 + 67 =
  5. 5.39² =
  6. 6.61 × 4 =
  7. 7.73 + 60 + 16 + 36 =
  8. 8.1 + 6 + 1 + 1 + 9 =
  9. 9.Best estimate of 801 × 8? (a) 6400 (b) 64000 (c) 640 (d) 12800
  10. 10.₹95.60 − ₹24.75 =
  11. 11.62 + 69 =
  12. 12.Best estimate of 81 × 58? (a) 4800 (b) 480 (c) 48000 (d) 9600
  13. 13.481 − 88 =
  14. 14.17 × 17 =
  15. 15.13 × 5 =
  16. 16.50% of 560 =
  17. 17.15% of 770 =
  18. 18.39 × 5 =
  19. 19.₹94.15 − ₹5.65 =
  20. 20.Best estimate of 58 × 51? (a) 30000 (b) 3000 (c) 6000 (d) 300
  21. 21.1 + 7 + 1 + 4 + 9 =
  22. 22.36 + 58 =
  23. 23.90 + 79 =
  24. 24.51² =
  25. 25.92 × 5 =
  26. 26.8 + 7 + 6 + 4 =
  27. 27.19 × 15 =
  28. 28.1200 ÷ 50 =
  29. 29.40 × 15 =
  30. 30.372 − 48 =
  31. 31.20% of 310 =
  32. 32.1 + 4 + 6 + 4 =
  33. 33.18 + 46 + 16 + 22 =
  34. 34.19² =
  35. 35.₹19.85 − ₹19.80 =
  36. 36.1 + 7 + 1 + 5 + 9 =
  37. 37.59 × 5 =
  38. 38.₹73.10 + ₹44.55 =
  39. 39.300 ÷ 5 =
  40. 40.₹48.60 + ₹23.75 =

Answer key

  1. 300
  2. 2500
  3. 380
  4. 383
  5. 1521
  6. 244
  7. 185
  8. 18
  9. 6400
  10. 70.85
  11. 131
  12. 4800
  13. 393
  14. 289
  15. 65
  16. 280
  17. 115.5
  18. 195
  19. 88.5
  20. 3000
  21. 22
  22. 94
  23. 169
  24. 2601
  25. 460
  26. 25
  27. 285
  28. 24
  29. 600
  30. 324
  31. 62
  32. 15
  33. 102
  34. 361
  35. 0.05
  36. 23
  37. 295
  38. 117.65
  39. 60
  40. 72.35

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