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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 939 · 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 × 15 =
  2. 2.₹39.60 + ₹47.20 =
  3. 3.40 + 78 =
  4. 4.71 + 37 =
  5. 5.190 ÷ 5 =
  6. 6.201 + 68 =
  7. 7.16 × 8 =
  8. 8.98 × 5 =
  9. 9.255 + 67 =
  10. 10.₹20.40 + ₹39.95 =
  11. 11.42 × 5 =
  12. 12.Best estimate of 798 × 5? (a) 40000 (b) 8000 (c) 4000 (d) 400
  13. 13.₹31.50 − ₹9.60 =
  14. 14.50% of 590 =
  15. 15.82 × 4 =
  16. 16.90 × 5 =
  17. 17.45 × 50 =
  18. 18.23 × 5 =
  19. 19.53 + 74 + 25 + 31 =
  20. 20.347 + 57 =
  21. 21.89² =
  22. 22.5% of 230 =
  23. 23.11 × 13 =
  24. 24.25% of 390 =
  25. 25.400 + 99 =
  26. 26.1300 ÷ 50 =
  27. 27.31² =
  28. 28.Check with nines: 51 × 73 = 3725. Correct or wrong? (a) correct (b) wrong
  29. 29.46 × 15 =
  30. 30.Check with nines: 32 × 70 = 2240. Correct or wrong? (a) wrong (b) correct
  31. 31.Best estimate of 899 × 9? (a) 16200 (b) 81000 (c) 8100 (d) 810
  32. 32.381 − 99 =
  33. 33.33 × 15 =
  34. 34.37 + 16 + 75 + 14 =
  35. 35.20% of 330 =
  36. 36.22 × 50 =
  37. 37.₹40.15 + ₹5.45 =
  38. 38.₹24.20 − ₹9.05 =
  39. 39.₹38.30 + ₹17.30 =
  40. 40.37 × 50 =

Answer key

  1. 105
  2. 86.8
  3. 118
  4. 108
  5. 38
  6. 269
  7. 128
  8. 490
  9. 322
  10. 60.35
  11. 210
  12. 4000
  13. 21.9
  14. 295
  15. 328
  16. 450
  17. 2250
  18. 115
  19. 183
  20. 404
  21. 7921
  22. 11.5
  23. 143
  24. 97.5
  25. 499
  26. 26
  27. 961
  28. wrong
  29. 690
  30. correct
  31. 8100
  32. 282
  33. 495
  34. 142
  35. 66
  36. 1100
  37. 45.6
  38. 15.15
  39. 55.6
  40. 1850

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