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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 836 · 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. 1.45 + 38 =
  2. 2.250 ÷ 25 =
  3. 3.383 + 49 =
  4. 4.565 − 27 =
  5. 5.7 × 15 =
  6. 6.Check with nines: 50 × 81 = 4055. Correct or wrong? (a) wrong (b) correct
  7. 7.₹54.25 + ₹34.25 =
  8. 8.85 × 50 =
  9. 9.14 × 11 =
  10. 10.8 + 2 + 2 + 3 =
  11. 11.150 ÷ 50 =
  12. 12.47 × 5 =
  13. 13.200 ÷ 50 =
  14. 14.71² =
  15. 15.19 × 16 =
  16. 16.39 × 4 =
  17. 17.59² =
  18. 18.₹29.25 − ₹17.40 =
  19. 19.Best estimate of 397 × 6? (a) 2400 (b) 24000 (c) 4800 (d) 240
  20. 20.303 + 39 =
  21. 21.₹7.90 + ₹9.25 =
  22. 22.393 + 17 =
  23. 23.492 − 26 =
  24. 24.142 − 39 =
  25. 25.40 + 46 + 18 + 51 =
  26. 26.935 ÷ 5 =
  27. 27.21² =
  28. 28.Check with nines: 15 × 36 = 546. Correct or wrong? (a) wrong (b) correct
  29. 29.56 + 16 + 40 + 12 =
  30. 30.67 × 5 =
  31. 31.15 + 65 + 39 + 44 =
  32. 32.8 + 1 + 3 + 7 =
  33. 33.66 × 8 =
  34. 34.45 + 58 =
  35. 35.17 × 18 =
  36. 36.73 + 41 + 44 + 56 =
  37. 37.56 − 16 =
  38. 38.15% of 850 =
  39. 39.₹33.15 − ₹18.85 =
  40. 40.13 × 14 =

Answer key

  1. 83
  2. 10
  3. 432
  4. 538
  5. 105
  6. wrong
  7. 88.5
  8. 4250
  9. 154
  10. 15
  11. 3
  12. 235
  13. 4
  14. 5041
  15. 304
  16. 156
  17. 3481
  18. 11.85
  19. 2400
  20. 342
  21. 17.15
  22. 410
  23. 466
  24. 103
  25. 155
  26. 187
  27. 441
  28. wrong
  29. 124
  30. 335
  31. 163
  32. 19
  33. 528
  34. 103
  35. 306
  36. 214
  37. 40
  38. 127.5
  39. 14.3
  40. 182

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