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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 367 · 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. 1.5 + 9 + 5 + 9 + 1 =
  2. 2.Check with nines: 91 × 37 = 3367. Correct or wrong? (a) correct (b) wrong
  3. 3.₹17.50 + ₹44.35 =
  4. 4.Best estimate of 501 × 6? (a) 30000 (b) 3000 (c) 300 (d) 6000
  5. 5.17 × 15 =
  6. 6.6 + 6 + 9 + 1 =
  7. 7.1% of 40 =
  8. 8.25% of 660 =
  9. 9.21² =
  10. 10.Best estimate of 22 × 39? (a) 80 (b) 8000 (c) 1600 (d) 800
  11. 11.1 + 6 + 9 + 6 =
  12. 12.81² =
  13. 13.531 − 87 =
  14. 14.312 − 38 =
  15. 15.5 + 8 + 2 + 7 =
  16. 16.45 × 15 =
  17. 17.121 + 99 =
  18. 18.5% of 450 =
  19. 19.10% of 220 =
  20. 20.209 − 26 =
  21. 21.Check with nines: 49 × 29 = 1421. Correct or wrong? (a) wrong (b) correct
  22. 22.₹72.90 − ₹48.40 =
  23. 23.20 × 8 =
  24. 24.518 − 86 =
  25. 25.₹83.55 + ₹20.55 =
  26. 26.550 ÷ 50 =
  27. 27.20% of 730 =
  28. 28.Best estimate of 198 × 3? (a) 1200 (b) 6000 (c) 60 (d) 600
  29. 29.₹27.20 − ₹18.20 =
  30. 30.156 × 4 =
  31. 31.₹24.30 + ₹35.90 =
  32. 32.561 − 79 =
  33. 33.₹44.95 − ₹8.15 =
  34. 34.₹5.05 + ₹44.65 =
  35. 35.72 × 5 =
  36. 36.137 × 4 =
  37. 37.₹74.10 − ₹46.90 =
  38. 38.154 × 4 =
  39. 39.165 − 98 =
  40. 40.61 × 5 =

Answer key

  1. 29
  2. correct
  3. 61.85
  4. 3000
  5. 255
  6. 22
  7. 0.4
  8. 165
  9. 441
  10. 800
  11. 22
  12. 6561
  13. 444
  14. 274
  15. 22
  16. 675
  17. 220
  18. 22.5
  19. 22
  20. 183
  21. correct
  22. 24.5
  23. 160
  24. 432
  25. 104.1
  26. 11
  27. 146
  28. 600
  29. 9
  30. 624
  31. 60.2
  32. 482
  33. 36.8
  34. 49.7
  35. 360
  36. 548
  37. 27.2
  38. 616
  39. 67
  40. 305

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