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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 977 · 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. 1.7 + 5 + 1 + 9 + 3 =
  2. 2.46 × 15 =
  3. 3.7 + 3 + 3 + 1 + 8 =
  4. 4.₹40.50 + ₹33.15 =
  5. 5.91² =
  6. 6.63 × 50 =
  7. 7.59² =
  8. 8.₹45.25 − ₹23.50 =
  9. 9.31² =
  10. 10.8 + 7 + 2 + 2 =
  11. 11.1% of 540 =
  12. 12.62 × 50 =
  13. 13.₹32.10 + ₹41.20 =
  14. 14.₹42.70 + ₹9.15 =
  15. 15.62 × 15 =
  16. 16.10% of 140 =
  17. 17.91² =
  18. 18.50% of 250 =
  19. 19.₹5.75 + ₹29.20 =
  20. 20.404 − 89 =
  21. 21.5 + 2 + 3 + 4 + 6 =
  22. 22.419 − 66 =
  23. 23.Best estimate of 79 × 78? (a) 640 (b) 64000 (c) 6400 (d) 12800
  24. 24.13 × 8 =
  25. 25.80 × 4 =
  26. 26.493 + 98 =
  27. 27.365 − 86 =
  28. 28.47 × 5 =
  29. 29.1450 ÷ 50 =
  30. 30.1% of 580 =
  31. 31.Check with nines: 309 + 483 = 797. Correct or wrong? (a) wrong (b) correct
  32. 32.219 − 79 =
  33. 33.25% of 40 =
  34. 34.₹54.05 − ₹49.20 =
  35. 35.1350 ÷ 50 =
  36. 36.147 + 69 =
  37. 37.8 × 15 =
  38. 38.₹80.55 + ₹17.60 =
  39. 39.₹89.35 + ₹19.80 =
  40. 40.850 ÷ 50 =

Answer key

  1. 25
  2. 690
  3. 22
  4. 73.65
  5. 8281
  6. 3150
  7. 3481
  8. 21.75
  9. 961
  10. 19
  11. 5.4
  12. 3100
  13. 73.3
  14. 51.85
  15. 930
  16. 14
  17. 8281
  18. 125
  19. 34.95
  20. 315
  21. 20
  22. 353
  23. 6400
  24. 104
  25. 320
  26. 591
  27. 279
  28. 235
  29. 29
  30. 5.8
  31. wrong
  32. 140
  33. 10
  34. 4.85
  35. 27
  36. 216
  37. 120
  38. 98.15
  39. 109.15
  40. 17

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