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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 906 · 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 × 12 =
  2. 2.Check with nines: 313 + 694 = 1003. Correct or wrong? (a) wrong (b) correct
  3. 3.19 × 15 =
  4. 4.25 × 15 =
  5. 5.182 + 59 =
  6. 6.104 − 27 =
  7. 7.206 − 18 =
  8. 8.₹90.75 − ₹19.65 =
  9. 9.79² =
  10. 10.66 + 81 + 59 + 71 =
  11. 11.12 × 15 =
  12. 12.6 + 9 + 4 + 9 + 5 =
  13. 13.456 + 48 =
  14. 14.88 × 4 =
  15. 15.Check with nines: 956 + 660 = 1616. Correct or wrong? (a) wrong (b) correct
  16. 16.69² =
  17. 17.117 × 4 =
  18. 18.525 − 79 =
  19. 19.65 + 41 + 14 + 34 =
  20. 20.105 ÷ 5 =
  21. 21.Best estimate of 38 × 48? (a) 20000 (b) 2000 (c) 4000 (d) 200
  22. 22.200 ÷ 50 =
  23. 23.43 + 72 + 72 + 77 =
  24. 24.69 × 8 =
  25. 25.9 + 5 + 1 + 5 + 9 =
  26. 26.Best estimate of 48 × 81? (a) 4000 (b) 40000 (c) 8000 (d) 400
  27. 27.1% of 460 =
  28. 28.89² =
  29. 29.3 + 7 + 1 + 5 =
  30. 30.325 ÷ 5 =
  31. 31.126 + 57 =
  32. 32.7 + 2 + 3 + 5 =
  33. 33.Best estimate of 98 × 3? (a) 30 (b) 600 (c) 3000 (d) 300
  34. 34.92 + 19 =
  35. 35.278 − 68 =
  36. 36.41² =
  37. 37.1475 ÷ 25 =
  38. 38.84 × 50 =
  39. 39.₹42.20 − ₹27.70 =
  40. 40.584 − 17 =

Answer key

  1. 132
  2. wrong
  3. 285
  4. 375
  5. 241
  6. 77
  7. 188
  8. 71.1
  9. 6241
  10. 277
  11. 180
  12. 33
  13. 504
  14. 352
  15. correct
  16. 4761
  17. 468
  18. 446
  19. 154
  20. 21
  21. 2000
  22. 4
  23. 264
  24. 552
  25. 29
  26. 4000
  27. 4.6
  28. 7921
  29. 16
  30. 65
  31. 183
  32. 17
  33. 300
  34. 111
  35. 210
  36. 1681
  37. 59
  38. 4200
  39. 14.5
  40. 567

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