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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 937 · 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. 1.62 × 15 =
  2. 2.16 × 17 =
  3. 3.42 × 8 =
  4. 4.Best estimate of 58 × 28? (a) 3600 (b) 180 (c) 1800 (d) 18000
  5. 5.20% of 80 =
  6. 6.320 + 17 =
  7. 7.₹63.30 + ₹14.10 =
  8. 8.Best estimate of 31 × 31? (a) 900 (b) 1800 (c) 90 (d) 9000
  9. 9.12 × 14 =
  10. 10.600 ÷ 50 =
  11. 11.42 + 66 + 62 + 82 =
  12. 12.27 × 15 =
  13. 13.345 + 79 =
  14. 14.63 × 15 =
  15. 15.59² =
  16. 16.61 × 5 =
  17. 17.73 × 50 =
  18. 18.186 + 39 =
  19. 19.20% of 180 =
  20. 20.387 + 28 =
  21. 21.39² =
  22. 22.459 − 29 =
  23. 23.318 + 57 =
  24. 24.₹37.50 − ₹25.15 =
  25. 25.6 + 3 + 9 + 4 =
  26. 26.59² =
  27. 27.32 × 8 =
  28. 28.5% of 40 =
  29. 29.17 + 28 + 73 + 51 =
  30. 30.70 × 5 =
  31. 31.51² =
  32. 32.30 × 15 =
  33. 33.90 ÷ 5 =
  34. 34.130 × 4 =
  35. 35.2 + 8 + 2 + 2 + 9 =
  36. 36.19² =
  37. 37.1900 ÷ 50 =
  38. 38.Check with nines: 37 × 45 = 1665. Correct or wrong? (a) wrong (b) correct
  39. 39.146 − 97 =
  40. 40.37 × 15 =

Answer key

  1. 930
  2. 272
  3. 336
  4. 1800
  5. 16
  6. 337
  7. 77.4
  8. 900
  9. 168
  10. 12
  11. 252
  12. 405
  13. 424
  14. 945
  15. 3481
  16. 305
  17. 3650
  18. 225
  19. 36
  20. 415
  21. 1521
  22. 430
  23. 375
  24. 12.35
  25. 22
  26. 3481
  27. 256
  28. 2
  29. 169
  30. 350
  31. 2601
  32. 450
  33. 18
  34. 520
  35. 23
  36. 361
  37. 38
  38. correct
  39. 49
  40. 555

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