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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 806 · 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.₹68.50 + ₹19.20 =
  2. 2.61² =
  3. 3.440 − 16 =
  4. 4.Best estimate of 38 × 89? (a) 36000 (b) 360 (c) 7200 (d) 3600
  5. 5.38 × 15 =
  6. 6.36 × 50 =
  7. 7.14 × 14 =
  8. 8.82 + 14 + 50 + 74 =
  9. 9.14 × 14 =
  10. 10.57 + 62 + 41 + 84 =
  11. 11.Best estimate of 203 × 4? (a) 1600 (b) 80 (c) 800 (d) 8000
  12. 12.72 × 8 =
  13. 13.23 + 57 + 68 + 58 =
  14. 14.141 − 46 =
  15. 15.259 + 77 =
  16. 16.56 − 38 =
  17. 17.20% of 90 =
  18. 18.79² =
  19. 19.₹18.30 + ₹22.45 =
  20. 20.255 + 59 =
  21. 21.12 × 8 =
  22. 22.346 + 28 =
  23. 23.775 ÷ 25 =
  24. 24.50% of 390 =
  25. 25.475 ÷ 25 =
  26. 26.52 × 5 =
  27. 27.17 × 11 =
  28. 28.41 × 15 =
  29. 29.419 − 39 =
  30. 30.15 × 15 =
  31. 31.91 × 50 =
  32. 32.33 + 87 + 28 + 16 =
  33. 33.10% of 80 =
  34. 34.68 × 50 =
  35. 35.650 ÷ 25 =
  36. 36.₹81.70 + ₹23.15 =
  37. 37.Check with nines: 43 × 35 = 1505. Correct or wrong? (a) wrong (b) correct
  38. 38.12 × 15 =
  39. 39.750 ÷ 50 =
  40. 40.13 × 12 =

Answer key

  1. 87.7
  2. 3721
  3. 424
  4. 3600
  5. 570
  6. 1800
  7. 196
  8. 220
  9. 196
  10. 244
  11. 800
  12. 576
  13. 206
  14. 95
  15. 336
  16. 18
  17. 18
  18. 6241
  19. 40.75
  20. 314
  21. 96
  22. 374
  23. 31
  24. 195
  25. 19
  26. 260
  27. 187
  28. 615
  29. 380
  30. 225
  31. 4550
  32. 164
  33. 8
  34. 3400
  35. 26
  36. 104.85
  37. correct
  38. 180
  39. 15
  40. 156

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