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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 32 · 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. 1.161 + 18 =
  2. 2.8 + 5 + 9 + 2 =
  3. 3.₹73.15 + ₹8.20 =
  4. 4.12 × 15 =
  5. 5.1125 ÷ 25 =
  6. 6.₹17.85 − ₹10.10 =
  7. 7.Check with nines: 73 × 43 = 3138. Correct or wrong? (a) wrong (b) correct
  8. 8.9 + 3 + 8 + 2 =
  9. 9.29² =
  10. 10.₹49.40 − ₹31.45 =
  11. 11.167 − 87 =
  12. 12.135 − 36 =
  13. 13.₹91.55 − ₹6.55 =
  14. 14.62 × 5 =
  15. 15.65 + 56 + 32 + 61 =
  16. 16.21² =
  17. 17.413 + 68 =
  18. 18.250 ÷ 25 =
  19. 19.182 − 68 =
  20. 20.45 × 15 =
  21. 21.23 × 5 =
  22. 22.19 × 11 =
  23. 23.Check with nines: 492 + 387 = 871. Correct or wrong? (a) wrong (b) correct
  24. 24.29 × 15 =
  25. 25.₹99.25 + ₹12.50 =
  26. 26.5% of 470 =
  27. 27.79 + 31 + 25 + 26 =
  28. 28.₹27.45 − ₹18.70 =
  29. 29.47 + 89 + 50 + 72 =
  30. 30.₹43.35 − ₹37.35 =
  31. 31.83 + 87 =
  32. 32.61² =
  33. 33.60 × 8 =
  34. 34.15 × 17 =
  35. 35.2 + 8 + 5 + 3 =
  36. 36.470 + 39 =
  37. 37.59 × 4 =
  38. 38.23 × 4 =
  39. 39.14 × 15 =
  40. 40.229 + 37 =

Answer key

  1. 179
  2. 24
  3. 81.35
  4. 180
  5. 45
  6. 7.75
  7. wrong
  8. 22
  9. 841
  10. 17.95
  11. 80
  12. 99
  13. 85
  14. 310
  15. 214
  16. 441
  17. 481
  18. 10
  19. 114
  20. 675
  21. 115
  22. 209
  23. wrong
  24. 435
  25. 111.75
  26. 23.5
  27. 161
  28. 8.75
  29. 258
  30. 6
  31. 170
  32. 3721
  33. 480
  34. 255
  35. 18
  36. 509
  37. 236
  38. 92
  39. 210
  40. 266

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