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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 553 · 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.Check with nines: 24 × 36 = 864. Correct or wrong? (a) wrong (b) correct
  2. 2.Check with nines: 523 + 242 = 766. Correct or wrong? (a) correct (b) wrong
  3. 3.₹63.40 − ₹4.70 =
  4. 4.10% of 580 =
  5. 5.17 × 19 =
  6. 6.25 × 5 =
  7. 7.11 × 17 =
  8. 8.₹95.10 − ₹5.90 =
  9. 9.₹83.20 + ₹19.70 =
  10. 10.372 + 28 =
  11. 11.29² =
  12. 12.40 × 4 =
  13. 13.175 ÷ 25 =
  14. 14.263 + 48 =
  15. 15.29² =
  16. 16.22 × 15 =
  17. 17.83 × 50 =
  18. 18.63 × 5 =
  19. 19.429 − 57 =
  20. 20.193 + 99 =
  21. 21.212 − 39 =
  22. 22.6 + 7 + 2 + 8 + 7 =
  23. 23.1% of 250 =
  24. 24.16 + 60 + 29 + 88 =
  25. 25.₹71.70 + ₹22.25 =
  26. 26.114 − 26 =
  27. 27.81 + 44 + 48 + 13 =
  28. 28.63 × 5 =
  29. 29.41² =
  30. 30.51 + 46 + 68 + 85 =
  31. 31.89² =
  32. 32.67 + 11 + 75 + 82 =
  33. 33.75 ÷ 25 =
  34. 34.₹50.60 + ₹30.20 =
  35. 35.70 + 70 + 14 + 27 =
  36. 36.8 + 2 + 2 + 8 =
  37. 37.61² =
  38. 38.₹14.50 + ₹32.10 =
  39. 39.Check with nines: 46 × 79 = 3629. Correct or wrong? (a) correct (b) wrong
  40. 40.588 − 17 =

Answer key

  1. correct
  2. wrong
  3. 58.7
  4. 58
  5. 323
  6. 125
  7. 187
  8. 89.2
  9. 102.9
  10. 400
  11. 841
  12. 160
  13. 7
  14. 311
  15. 841
  16. 330
  17. 4150
  18. 315
  19. 372
  20. 292
  21. 173
  22. 30
  23. 2.5
  24. 193
  25. 93.95
  26. 88
  27. 186
  28. 315
  29. 1681
  30. 250
  31. 7921
  32. 235
  33. 3
  34. 80.8
  35. 181
  36. 20
  37. 3721
  38. 46.6
  39. wrong
  40. 571

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