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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 990 · 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. 1.49² =
  2. 2.23 × 4 =
  3. 3.20% of 700 =
  4. 4.105 × 4 =
  5. 5.75 + 46 + 36 + 50 =
  6. 6.₹55.25 − ₹48.35 =
  7. 7.7 + 3 + 3 + 2 + 7 =
  8. 8.Best estimate of 38 × 59? (a) 2400 (b) 240 (c) 4800 (d) 24000
  9. 9.82 × 4 =
  10. 10.85 + 29 =
  11. 11.35 × 15 =
  12. 12.20% of 880 =
  13. 13.51 × 15 =
  14. 14.127 × 4 =
  15. 15.294 − 27 =
  16. 16.28 + 27 + 33 + 23 =
  17. 17.58 × 15 =
  18. 18.56 × 5 =
  19. 19.20 × 5 =
  20. 20.51 × 50 =
  21. 21.₹56.50 + ₹28.50 =
  22. 22.50% of 760 =
  23. 23.Check with nines: 37 × 71 = 2627. Correct or wrong? (a) correct (b) wrong
  24. 24.100 + 19 =
  25. 25.31 × 50 =
  26. 26.63 + 46 + 29 + 74 =
  27. 27.20% of 560 =
  28. 28.990 ÷ 5 =
  29. 29.57 × 5 =
  30. 30.140 − 77 =
  31. 31.62 × 15 =
  32. 32.9 + 4 + 7 + 1 + 2 =
  33. 33.599 − 26 =
  34. 34.476 + 98 =
  35. 35.6 + 8 + 4 + 7 + 4 =
  36. 36.17 × 16 =
  37. 37.Check with nines: 69 × 66 = 4554. Correct or wrong? (a) correct (b) wrong
  38. 38.52 × 15 =
  39. 39.159 + 17 =
  40. 40.118 − 96 =

Answer key

  1. 2401
  2. 92
  3. 140
  4. 420
  5. 207
  6. 6.9
  7. 22
  8. 2400
  9. 328
  10. 114
  11. 525
  12. 176
  13. 765
  14. 508
  15. 267
  16. 111
  17. 870
  18. 280
  19. 100
  20. 2550
  21. 85
  22. 380
  23. correct
  24. 119
  25. 1550
  26. 212
  27. 112
  28. 198
  29. 285
  30. 63
  31. 930
  32. 23
  33. 573
  34. 574
  35. 29
  36. 272
  37. correct
  38. 780
  39. 176
  40. 22

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