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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 55 · 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. 1.236 − 69 =
  2. 2.16 × 16 =
  3. 3.468 + 38 =
  4. 4.256 + 98 =
  5. 5.263 + 18 =
  6. 6.₹42.50 − ₹38.05 =
  7. 7.Best estimate of 82 × 18? (a) 160 (b) 3200 (c) 16000 (d) 1600
  8. 8.8 + 9 + 1 + 9 =
  9. 9.140 × 4 =
  10. 10.222 − 98 =
  11. 11.59 × 50 =
  12. 12.Check with nines: 266 + 335 = 601. Correct or wrong? (a) correct (b) wrong
  13. 13.13 × 13 =
  14. 14.₹41.45 − ₹40.05 =
  15. 15.₹69.90 − ₹24.05 =
  16. 16.69 + 69 + 55 + 31 =
  17. 17.₹20.75 + ₹2.70 =
  18. 18.29 + 88 + 18 + 16 =
  19. 19.91 × 50 =
  20. 20.60 × 8 =
  21. 21.41 × 15 =
  22. 22.470 + 47 =
  23. 23.Check with nines: 863 + 158 = 1021. Correct or wrong? (a) wrong (b) correct
  24. 24.9 + 2 + 9 + 2 + 1 =
  25. 25.₹35.95 − ₹24.30 =
  26. 26.4 + 6 + 2 + 8 =
  27. 27.10% of 500 =
  28. 28.262 − 28 =
  29. 29.50 + 47 + 20 + 68 =
  30. 30.₹17.20 + ₹33.15 =
  31. 31.32 + 25 + 72 + 32 =
  32. 32.29² =
  33. 33.3 + 4 + 1 + 6 =
  34. 34.28 × 15 =
  35. 35.Check with nines: 47 × 58 = 2726. Correct or wrong? (a) wrong (b) correct
  36. 36.32 + 38 + 22 + 17 =
  37. 37.29² =
  38. 38.19 × 13 =
  39. 39.2 + 5 + 4 + 5 =
  40. 40.36 × 15 =

Answer key

  1. 167
  2. 256
  3. 506
  4. 354
  5. 281
  6. 4.45
  7. 1600
  8. 27
  9. 560
  10. 124
  11. 2950
  12. correct
  13. 169
  14. 1.4
  15. 45.85
  16. 224
  17. 23.45
  18. 151
  19. 4550
  20. 480
  21. 615
  22. 517
  23. correct
  24. 23
  25. 11.65
  26. 20
  27. 50
  28. 234
  29. 185
  30. 50.35
  31. 161
  32. 841
  33. 14
  34. 420
  35. correct
  36. 109
  37. 841
  38. 247
  39. 16
  40. 540

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