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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 761 · 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. 1.51 × 15 =
  2. 2.2 + 6 + 4 + 2 + 4 =
  3. 3.Check with nines: 46 × 38 = 1748. Correct or wrong? (a) wrong (b) correct
  4. 4.75 + 55 + 41 + 19 =
  5. 5.25% of 200 =
  6. 6.25% of 510 =
  7. 7.Best estimate of 199 × 5? (a) 1000 (b) 100 (c) 10000 (d) 2000
  8. 8.18 × 11 =
  9. 9.23 × 4 =
  10. 10.8 + 7 + 2 + 7 + 3 =
  11. 11.3 + 6 + 9 + 4 + 6 =
  12. 12.84 × 5 =
  13. 13.207 − 48 =
  14. 14.10% of 230 =
  15. 15.42 × 15 =
  16. 16.14 × 15 =
  17. 17.24 + 27 + 80 + 85 =
  18. 18.31 × 15 =
  19. 19.1200 ÷ 50 =
  20. 20.15 × 16 =
  21. 21.47 × 50 =
  22. 22.27 + 31 + 26 + 30 =
  23. 23.₹30.25 − ₹5.40 =
  24. 24.Best estimate of 403 × 4? (a) 3200 (b) 16000 (c) 160 (d) 1600
  25. 25.42 × 4 =
  26. 26.15 + 13 + 87 + 40 =
  27. 27.630 ÷ 5 =
  28. 28.77 × 50 =
  29. 29.₹56.85 + ₹3.40 =
  30. 30.24 × 15 =
  31. 31.5 + 3 + 3 + 3 + 7 =
  32. 32.209 + 47 =
  33. 33.Check with nines: 38 × 12 = 453. Correct or wrong? (a) wrong (b) correct
  34. 34.563 − 78 =
  35. 35.1 + 6 + 4 + 1 =
  36. 36.50% of 800 =
  37. 37.12 × 15 =
  38. 38.32 × 15 =
  39. 39.5% of 340 =
  40. 40.508 − 37 =

Answer key

  1. 765
  2. 18
  3. correct
  4. 190
  5. 50
  6. 127.5
  7. 1000
  8. 198
  9. 92
  10. 27
  11. 28
  12. 420
  13. 159
  14. 23
  15. 630
  16. 210
  17. 216
  18. 465
  19. 24
  20. 240
  21. 2350
  22. 114
  23. 24.85
  24. 1600
  25. 168
  26. 155
  27. 126
  28. 3850
  29. 60.25
  30. 360
  31. 21
  32. 256
  33. wrong
  34. 485
  35. 12
  36. 400
  37. 180
  38. 480
  39. 17
  40. 471

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