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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 25 · 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.Best estimate of 52 × 69? (a) 350 (b) 3500 (c) 7000 (d) 35000
  2. 2.1% of 140 =
  3. 3.25% of 60 =
  4. 4.8 + 2 + 7 + 2 =
  5. 5.29² =
  6. 6.139 − 68 =
  7. 7.20% of 520 =
  8. 8.38 × 4 =
  9. 9.₹72.45 + ₹46.45 =
  10. 10.₹91.70 − ₹40.10 =
  11. 11.12 × 15 =
  12. 12.39² =
  13. 13.₹13.45 + ₹10.15 =
  14. 14.192 + 69 =
  15. 15.₹44.55 + ₹30.95 =
  16. 16.5 + 1 + 1 + 9 + 5 =
  17. 17.269 + 17 =
  18. 18.Check with nines: 30 × 57 = 1709. Correct or wrong? (a) wrong (b) correct
  19. 19.9 + 4 + 6 + 5 =
  20. 20.73 + 28 + 46 + 53 =
  21. 21.₹72.70 + ₹25.40 =
  22. 22.Check with nines: 81 × 96 = 7776. Correct or wrong? (a) wrong (b) correct
  23. 23.72 × 5 =
  24. 24.5% of 260 =
  25. 25.10% of 890 =
  26. 26.59² =
  27. 27.536 − 78 =
  28. 28.310 ÷ 5 =
  29. 29.6 + 2 + 9 + 8 =
  30. 30.25 × 8 =
  31. 31.36 × 15 =
  32. 32.19² =
  33. 33.Best estimate of 72 × 88? (a) 63000 (b) 630 (c) 6300 (d) 12600
  34. 34.32 + 32 + 83 + 14 =
  35. 35.29² =
  36. 36.₹43.75 + ₹4.60 =
  37. 37.49 × 15 =
  38. 38.45 × 15 =
  39. 39.73 + 35 + 21 + 55 =
  40. 40.49² =

Answer key

  1. 3500
  2. 1.4
  3. 15
  4. 19
  5. 841
  6. 71
  7. 104
  8. 152
  9. 118.9
  10. 51.6
  11. 180
  12. 1521
  13. 23.6
  14. 261
  15. 75.5
  16. 21
  17. 286
  18. wrong
  19. 24
  20. 200
  21. 98.1
  22. correct
  23. 360
  24. 13
  25. 89
  26. 3481
  27. 458
  28. 62
  29. 25
  30. 200
  31. 540
  32. 361
  33. 6300
  34. 161
  35. 841
  36. 48.35
  37. 735
  38. 675
  39. 184
  40. 2401

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