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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 930 · 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. 1.41 × 15 =
  2. 2.₹30.50 + ₹44.80 =
  3. 3.106 × 4 =
  4. 4.₹28.25 + ₹17.20 =
  5. 5.Check with nines: 765 + 819 = 1584. Correct or wrong? (a) correct (b) wrong
  6. 6.25 × 50 =
  7. 7.25% of 690 =
  8. 8.38 × 5 =
  9. 9.₹63.20 + ₹49.15 =
  10. 10.60 × 5 =
  11. 11.Best estimate of 602 × 4? (a) 4800 (b) 2400 (c) 24000 (d) 240
  12. 12.1375 ÷ 25 =
  13. 13.33 + 74 + 55 + 72 =
  14. 14.6 × 15 =
  15. 15.73 × 8 =
  16. 16.575 ÷ 25 =
  17. 17.9 + 5 + 4 + 5 =
  18. 18.₹8.45 + ₹30.60 =
  19. 19.25% of 200 =
  20. 20.375 + 29 =
  21. 21.513 − 66 =
  22. 22.5 + 9 + 5 + 1 =
  23. 23.15 × 15 =
  24. 24.21² =
  25. 25.9 + 7 + 7 + 3 =
  26. 26.7 + 1 + 2 + 7 + 8 =
  27. 27.5 + 2 + 4 + 6 + 2 =
  28. 28.1 + 2 + 8 + 8 + 2 =
  29. 29.Best estimate of 399 × 3? (a) 2400 (b) 12000 (c) 1200 (d) 120
  30. 30.₹27.30 − ₹13.20 =
  31. 31.127 + 38 =
  32. 32.23 × 50 =
  33. 33.Check with nines: 59 × 65 = 3838. Correct or wrong? (a) correct (b) wrong
  34. 34.13 × 19 =
  35. 35.24 + 33 + 14 + 54 =
  36. 36.43 + 59 =
  37. 37.192 + 48 =
  38. 38.19² =
  39. 39.30 × 5 =
  40. 40.46 + 78 =

Answer key

  1. 615
  2. 75.3
  3. 424
  4. 45.45
  5. correct
  6. 1250
  7. 172.5
  8. 190
  9. 112.35
  10. 300
  11. 2400
  12. 55
  13. 234
  14. 90
  15. 584
  16. 23
  17. 23
  18. 39.05
  19. 50
  20. 404
  21. 447
  22. 20
  23. 225
  24. 441
  25. 26
  26. 25
  27. 19
  28. 21
  29. 1200
  30. 14.1
  31. 165
  32. 1150
  33. wrong
  34. 247
  35. 125
  36. 102
  37. 240
  38. 361
  39. 150
  40. 124

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