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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 311 · 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. 1.39² =
  2. 2.370 ÷ 5 =
  3. 3.83 + 45 + 15 + 35 =
  4. 4.78 − 19 =
  5. 5.20% of 420 =
  6. 6.562 − 98 =
  7. 7.25% of 520 =
  8. 8.8 + 6 + 3 + 7 =
  9. 9.363 − 87 =
  10. 10.25% of 780 =
  11. 11.79² =
  12. 12.Best estimate of 49 × 91? (a) 4500 (b) 450 (c) 9000 (d) 45000
  13. 13.1 + 3 + 7 + 3 =
  14. 14.236 + 39 =
  15. 15.₹17.85 − ₹10.45 =
  16. 16.Check with nines: 67 × 88 = 5898. Correct or wrong? (a) correct (b) wrong
  17. 17.17 × 8 =
  18. 18.68 × 8 =
  19. 19.₹84.80 + ₹46.15 =
  20. 20.₹25.15 + ₹25.75 =
  21. 21.425 ÷ 25 =
  22. 22.84 + 97 =
  23. 23.154 + 68 =
  24. 24.61² =
  25. 25.155 − 49 =
  26. 26.15 × 15 =
  27. 27.5 × 15 =
  28. 28.79² =
  29. 29.50% of 250 =
  30. 30.₹16.80 − ₹8.65 =
  31. 31.81 × 4 =
  32. 32.35 × 15 =
  33. 33.Check with nines: 525 + 923 = 1448. Correct or wrong? (a) wrong (b) correct
  34. 34.15% of 60 =
  35. 35.474 − 88 =
  36. 36.Best estimate of 202 × 6? (a) 120 (b) 2400 (c) 1200 (d) 12000
  37. 37.₹39.75 − ₹27.45 =
  38. 38.Best estimate of 19 × 19? (a) 800 (b) 40 (c) 400 (d) 4000
  39. 39.25% of 290 =
  40. 40.625 ÷ 25 =

Answer key

  1. 1521
  2. 74
  3. 178
  4. 59
  5. 84
  6. 464
  7. 130
  8. 24
  9. 276
  10. 195
  11. 6241
  12. 4500
  13. 14
  14. 275
  15. 7.4
  16. wrong
  17. 136
  18. 544
  19. 130.95
  20. 50.9
  21. 17
  22. 181
  23. 222
  24. 3721
  25. 106
  26. 225
  27. 75
  28. 6241
  29. 125
  30. 8.15
  31. 324
  32. 525
  33. correct
  34. 9
  35. 386
  36. 1200
  37. 12.3
  38. 400
  39. 72.5
  40. 25

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