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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 991 · 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. 1.15% of 660 =
  2. 2.11 × 12 =
  3. 3.29² =
  4. 4.117 + 49 =
  5. 5.25% of 240 =
  6. 6.69² =
  7. 7.₹92.10 + ₹6.75 =
  8. 8.Best estimate of 78 × 38? (a) 3200 (b) 32000 (c) 320 (d) 6400
  9. 9.72 + 83 + 35 + 82 =
  10. 10.64 × 15 =
  11. 11.Best estimate of 61 × 82? (a) 48000 (b) 9600 (c) 4800 (d) 480
  12. 12.307 + 38 =
  13. 13.43 + 33 + 66 + 69 =
  14. 14.Check with nines: 97 × 57 = 5529. Correct or wrong? (a) wrong (b) correct
  15. 15.317 + 87 =
  16. 16.₹36.80 − ₹9.10 =
  17. 17.Check with nines: 212 + 371 = 589. Correct or wrong? (a) wrong (b) correct
  18. 18.65 × 50 =
  19. 19.₹30.70 + ₹20.10 =
  20. 20.17 × 17 =
  21. 21.42 × 15 =
  22. 22.361 + 98 =
  23. 23.442 + 48 =
  24. 24.55 + 47 + 30 + 39 =
  25. 25.18 × 4 =
  26. 26.₹20.90 + ₹6.75 =
  27. 27.81² =
  28. 28.₹10.10 + ₹45.25 =
  29. 29.15% of 210 =
  30. 30.22 × 15 =
  31. 31.140 + 78 =
  32. 32.39² =
  33. 33.440 ÷ 5 =
  34. 34.18 × 15 =
  35. 35.33 × 8 =
  36. 36.₹73.25 − ₹26.90 =
  37. 37.50% of 460 =
  38. 38.2 + 4 + 6 + 3 =
  39. 39.5 + 2 + 3 + 5 =
  40. 40.41 × 50 =

Answer key

  1. 99
  2. 132
  3. 841
  4. 166
  5. 60
  6. 4761
  7. 98.85
  8. 3200
  9. 272
  10. 960
  11. 4800
  12. 345
  13. 211
  14. correct
  15. 404
  16. 27.7
  17. wrong
  18. 3250
  19. 50.8
  20. 289
  21. 630
  22. 459
  23. 490
  24. 171
  25. 72
  26. 27.65
  27. 6561
  28. 55.35
  29. 31.5
  30. 330
  31. 218
  32. 1521
  33. 88
  34. 270
  35. 264
  36. 46.35
  37. 230
  38. 15
  39. 15
  40. 2050

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