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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 790 · 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. 1.43 × 8 =
  2. 2.22 × 5 =
  3. 3.9 + 2 + 1 + 6 =
  4. 4.120 ÷ 5 =
  5. 5.₹46.75 − ₹26.35 =
  6. 6.81² =
  7. 7.31² =
  8. 8.52 + 17 + 36 + 87 =
  9. 9.15% of 820 =
  10. 10.18 × 15 =
  11. 11.71² =
  12. 12.6 + 4 + 7 + 8 =
  13. 13.₹93.30 − ₹44.80 =
  14. 14.Check with nines: 59 × 82 = 4838. Correct or wrong? (a) wrong (b) correct
  15. 15.48 × 5 =
  16. 16.18 × 4 =
  17. 17.8 + 9 + 1 + 2 =
  18. 18.323 − 28 =
  19. 19.32 × 50 =
  20. 20.Check with nines: 998 + 158 = 1159. Correct or wrong? (a) correct (b) wrong
  21. 21.16 + 33 + 49 + 49 =
  22. 22.2 + 5 + 5 + 9 =
  23. 23.56 × 8 =
  24. 24.1 + 4 + 9 + 1 + 9 =
  25. 25.130 ÷ 5 =
  26. 26.530 ÷ 5 =
  27. 27.58 × 15 =
  28. 28.27 × 15 =
  29. 29.15 × 5 =
  30. 30.Check with nines: 679 + 133 = 815. Correct or wrong? (a) correct (b) wrong
  31. 31.144 − 79 =
  32. 32.135 × 4 =
  33. 33.25 × 8 =
  34. 34.₹21.55 + ₹5.20 =
  35. 35.42 + 50 + 35 + 43 =
  36. 36.25% of 80 =
  37. 37.14 × 15 =
  38. 38.Best estimate of 698 × 9? (a) 6300 (b) 630 (c) 12600 (d) 63000
  39. 39.15% of 800 =
  40. 40.₹72.55 − ₹43.30 =

Answer key

  1. 344
  2. 110
  3. 18
  4. 24
  5. 20.4
  6. 6561
  7. 961
  8. 192
  9. 123
  10. 270
  11. 5041
  12. 25
  13. 48.5
  14. correct
  15. 240
  16. 72
  17. 20
  18. 295
  19. 1600
  20. wrong
  21. 147
  22. 21
  23. 448
  24. 24
  25. 26
  26. 106
  27. 870
  28. 405
  29. 75
  30. wrong
  31. 65
  32. 540
  33. 200
  34. 26.75
  35. 170
  36. 20
  37. 210
  38. 6300
  39. 120
  40. 29.25

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