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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 374 · 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. 1.518 − 38 =
  2. 2.403 + 28 =
  3. 3.31 + 11 + 83 + 39 =
  4. 4.21 × 5 =
  5. 5.3 + 7 + 4 + 2 =
  6. 6.4 + 5 + 7 + 3 =
  7. 7.463 + 38 =
  8. 8.Best estimate of 303 × 3? (a) 1800 (b) 90 (c) 900 (d) 9000
  9. 9.₹6.25 + ₹12.05 =
  10. 10.59² =
  11. 11.1350 ÷ 25 =
  12. 12.54 × 50 =
  13. 13.81² =
  14. 14.79² =
  15. 15.39² =
  16. 16.104 + 99 =
  17. 17.61 × 15 =
  18. 18.49² =
  19. 19.189 − 38 =
  20. 20.5% of 860 =
  21. 21.175 ÷ 5 =
  22. 22.15% of 80 =
  23. 23.44 × 15 =
  24. 24.38 × 15 =
  25. 25.14 + 30 + 81 + 39 =
  26. 26.32 × 15 =
  27. 27.1225 ÷ 25 =
  28. 28.71 × 50 =
  29. 29.25 × 15 =
  30. 30.40 × 15 =
  31. 31.1% of 800 =
  32. 32.29² =
  33. 33.25% of 170 =
  34. 34.20 × 8 =
  35. 35.₹10.40 − ₹9.85 =
  36. 36.₹88.10 + ₹13.75 =
  37. 37.Check with nines: 474 + 546 = 1020. Correct or wrong? (a) wrong (b) correct
  38. 38.14 × 16 =
  39. 39.9 + 1 + 1 + 5 + 6 =
  40. 40.1125 ÷ 25 =

Answer key

  1. 480
  2. 431
  3. 164
  4. 105
  5. 16
  6. 19
  7. 501
  8. 900
  9. 18.3
  10. 3481
  11. 54
  12. 2700
  13. 6561
  14. 6241
  15. 1521
  16. 203
  17. 915
  18. 2401
  19. 151
  20. 43
  21. 35
  22. 12
  23. 660
  24. 570
  25. 164
  26. 480
  27. 49
  28. 3550
  29. 375
  30. 600
  31. 8
  32. 841
  33. 42.5
  34. 160
  35. 0.55
  36. 101.85
  37. correct
  38. 224
  39. 22
  40. 45

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