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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 321 · 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. 1.50% of 510 =
  2. 2.5% of 640 =
  3. 3.1% of 590 =
  4. 4.598 − 87 =
  5. 5.77 × 5 =
  6. 6.47 × 15 =
  7. 7.142 + 99 =
  8. 8.311 + 79 =
  9. 9.10% of 100 =
  10. 10.44 + 26 + 19 + 65 =
  11. 11.46 × 15 =
  12. 12.Check with nines: 901 + 609 = 1510. Correct or wrong? (a) wrong (b) correct
  13. 13.355 + 58 =
  14. 14.785 ÷ 5 =
  15. 15.17 × 15 =
  16. 16.28 × 5 =
  17. 17.89² =
  18. 18.4 + 1 + 8 + 9 =
  19. 19.61 × 8 =
  20. 20.19² =
  21. 21.44 × 50 =
  22. 22.44 × 50 =
  23. 23.36 × 5 =
  24. 24.32 × 5 =
  25. 25.585 ÷ 5 =
  26. 26.21² =
  27. 27.335 ÷ 5 =
  28. 28.₹97.70 + ₹31.60 =
  29. 29.₹35.55 − ₹9.25 =
  30. 30.91² =
  31. 31.49 × 5 =
  32. 32.Check with nines: 63 × 24 = 1512. Correct or wrong? (a) correct (b) wrong
  33. 33.₹13.55 + ₹9.15 =
  34. 34.45 × 15 =
  35. 35.Best estimate of 39 × 18? (a) 800 (b) 1600 (c) 8000 (d) 80
  36. 36.₹62.05 + ₹36.75 =
  37. 37.7 + 2 + 2 + 8 =
  38. 38.Best estimate of 22 × 59? (a) 12000 (b) 120 (c) 2400 (d) 1200
  39. 39.₹84.70 + ₹37.65 =
  40. 40.68 + 57 + 41 + 47 =

Answer key

  1. 255
  2. 32
  3. 5.9
  4. 511
  5. 385
  6. 705
  7. 241
  8. 390
  9. 10
  10. 154
  11. 690
  12. correct
  13. 413
  14. 157
  15. 255
  16. 140
  17. 7921
  18. 22
  19. 488
  20. 361
  21. 2200
  22. 2200
  23. 180
  24. 160
  25. 117
  26. 441
  27. 67
  28. 129.3
  29. 26.3
  30. 8281
  31. 245
  32. correct
  33. 22.7
  34. 675
  35. 800
  36. 98.8
  37. 19
  38. 1200
  39. 122.35
  40. 213

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