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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 8 · 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. 1.1% of 900 =
  2. 2.460 + 98 =
  3. 3.490 − 69 =
  4. 4.Check with nines: 74 × 45 = 3330. Correct or wrong? (a) wrong (b) correct
  5. 5.47 + 81 + 28 + 26 =
  6. 6.17 × 15 =
  7. 7.1 + 1 + 1 + 9 =
  8. 8.25 × 5 =
  9. 9.435 ÷ 5 =
  10. 10.₹40.35 + ₹33.15 =
  11. 11.50% of 780 =
  12. 12.361 + 47 =
  13. 13.32 × 15 =
  14. 14.231 + 27 =
  15. 15.36 + 59 + 69 + 28 =
  16. 16.Best estimate of 798 × 5? (a) 400 (b) 8000 (c) 4000 (d) 40000
  17. 17.8 + 8 + 9 + 1 =
  18. 18.63 × 15 =
  19. 19.Check with nines: 453 + 215 = 668. Correct or wrong? (a) correct (b) wrong
  20. 20.138 × 4 =
  21. 21.₹26.75 + ₹32.60 =
  22. 22.79² =
  23. 23.18 × 18 =
  24. 24.₹73.70 − ₹33.65 =
  25. 25.13 + 51 + 83 + 56 =
  26. 26.6 + 1 + 4 + 1 =
  27. 27.44 × 5 =
  28. 28.Check with nines: 69 × 76 = 5244. Correct or wrong? (a) wrong (b) correct
  29. 29.5% of 90 =
  30. 30.418 + 37 =
  31. 31.67 × 50 =
  32. 32.20% of 30 =
  33. 33.25% of 750 =
  34. 34.₹73.10 − ₹22.35 =
  35. 35.493 − 86 =
  36. 36.27 + 53 + 78 + 58 =
  37. 37.59² =
  38. 38.47 × 15 =
  39. 39.15% of 180 =
  40. 40.249 − 87 =

Answer key

  1. 9
  2. 558
  3. 421
  4. correct
  5. 182
  6. 255
  7. 12
  8. 125
  9. 87
  10. 73.5
  11. 390
  12. 408
  13. 480
  14. 258
  15. 192
  16. 4000
  17. 26
  18. 945
  19. correct
  20. 552
  21. 59.35
  22. 6241
  23. 324
  24. 40.05
  25. 203
  26. 12
  27. 220
  28. correct
  29. 4.5
  30. 455
  31. 3350
  32. 6
  33. 187.5
  34. 50.75
  35. 407
  36. 216
  37. 3481
  38. 705
  39. 27
  40. 162

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