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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 950 · 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. 1.11 × 14 =
  2. 2.86 + 74 + 65 + 37 =
  3. 3.Check with nines: 804 + 418 = 1215. Correct or wrong? (a) wrong (b) correct
  4. 4.Check with nines: 764 + 632 = 1396. Correct or wrong? (a) correct (b) wrong
  5. 5.24 × 15 =
  6. 6.₹20.65 − ₹9.80 =
  7. 7.850 ÷ 50 =
  8. 8.980 ÷ 5 =
  9. 9.Best estimate of 61 × 18? (a) 1200 (b) 12000 (c) 120 (d) 2400
  10. 10.162 + 29 =
  11. 11.235 − 38 =
  12. 12.23 × 8 =
  13. 13.95 × 5 =
  14. 14.25% of 410 =
  15. 15.275 + 98 =
  16. 16.41² =
  17. 17.10% of 250 =
  18. 18.Best estimate of 601 × 9? (a) 10800 (b) 540 (c) 54000 (d) 5400
  19. 19.89 × 5 =
  20. 20.52 + 40 + 38 + 32 =
  21. 21.492 − 99 =
  22. 22.₹46.75 − ₹34.75 =
  23. 23.76 − 37 =
  24. 24.19² =
  25. 25.83 × 5 =
  26. 26.81 + 84 + 57 + 22 =
  27. 27.9 + 7 + 1 + 7 =
  28. 28.239 − 27 =
  29. 29.56 + 22 + 82 + 50 =
  30. 30.19 × 15 =
  31. 31.26 × 8 =
  32. 32.20% of 720 =
  33. 33.13 × 18 =
  34. 34.28 × 50 =
  35. 35.Check with nines: 282 + 221 = 504. Correct or wrong? (a) wrong (b) correct
  36. 36.30 × 15 =
  37. 37.100 − 16 =
  38. 38.31 × 4 =
  39. 39.58 × 15 =
  40. 40.18 × 13 =

Answer key

  1. 154
  2. 262
  3. wrong
  4. correct
  5. 360
  6. 10.85
  7. 17
  8. 196
  9. 1200
  10. 191
  11. 197
  12. 184
  13. 475
  14. 102.5
  15. 373
  16. 1681
  17. 25
  18. 5400
  19. 445
  20. 162
  21. 393
  22. 12
  23. 39
  24. 361
  25. 415
  26. 244
  27. 24
  28. 212
  29. 210
  30. 285
  31. 208
  32. 144
  33. 234
  34. 1400
  35. wrong
  36. 450
  37. 84
  38. 124
  39. 870
  40. 234

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