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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 817 · 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. 1.25% of 900 =
  2. 2.40 + 14 + 74 + 87 =
  3. 3.11 × 16 =
  4. 4.399 + 28 =
  5. 5.179 + 59 =
  6. 6.37 + 29 + 37 + 27 =
  7. 7.65 × 5 =
  8. 8.36 × 5 =
  9. 9.1200 ÷ 50 =
  10. 10.Best estimate of 397 × 3? (a) 2400 (b) 12000 (c) 120 (d) 1200
  11. 11.16 + 27 + 55 + 85 =
  12. 12.238 + 47 =
  13. 13.11 × 12 =
  14. 14.19 × 12 =
  15. 15.69² =
  16. 16.Best estimate of 19 × 79? (a) 3200 (b) 1600 (c) 160 (d) 16000
  17. 17.325 ÷ 25 =
  18. 18.₹61.70 + ₹28.35 =
  19. 19.625 ÷ 25 =
  20. 20.56 × 15 =
  21. 21.₹57.15 − ₹47.80 =
  22. 22.272 + 79 =
  23. 23.9 + 1 + 4 + 2 =
  24. 24.84 + 69 + 82 + 35 =
  25. 25.₹16.25 + ₹2.55 =
  26. 26.₹99.50 − ₹11.95 =
  27. 27.74 + 12 + 84 + 52 =
  28. 28.32 + 58 =
  29. 29.492 − 99 =
  30. 30.14 × 18 =
  31. 31.61 − 26 =
  32. 32.Check with nines: 39 × 55 = 2150. Correct or wrong? (a) wrong (b) correct
  33. 33.1% of 100 =
  34. 34.5% of 140 =
  35. 35.417 + 29 =
  36. 36.33 × 15 =
  37. 37.287 + 68 =
  38. 38.19 × 17 =
  39. 39.125 ÷ 25 =
  40. 40.283 + 19 =

Answer key

  1. 225
  2. 215
  3. 176
  4. 427
  5. 238
  6. 130
  7. 325
  8. 180
  9. 24
  10. 1200
  11. 183
  12. 285
  13. 132
  14. 228
  15. 4761
  16. 1600
  17. 13
  18. 90.05
  19. 25
  20. 840
  21. 9.35
  22. 351
  23. 16
  24. 270
  25. 18.8
  26. 87.55
  27. 222
  28. 90
  29. 393
  30. 252
  31. 35
  32. wrong
  33. 1
  34. 7
  35. 446
  36. 495
  37. 355
  38. 323
  39. 5
  40. 302

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