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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 112 · 40 questions
TalentJR

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

NameDateTime takenScore ___ / 40
  1. 1.0.87 × 4.1 — where does the decimal point go? (a) 0.03567 (b) 0.3567 (c) 35.67 (d) 3.567
  2. 2.0.41 × 3.3 — where does the decimal point go? (a) 1.353 (b) 13.53 (c) 0.1353 (d) 0.01353
  3. 3.6.6 × 0.8 — where does the decimal point go? (a) 0.0528 (b) 52.8 (c) 5.28 (d) 0.528
  4. 4.1.9 × 0.4 — where does the decimal point go? (a) 0.76 (b) 0.0076 (c) 0.076 (d) 7.6
  5. 5.0.31 × 4.5 — where does the decimal point go? (a) 0.01395 (b) 13.95 (c) 1.395 (d) 0.1395
  6. 6.9.3 × 0.6 — where does the decimal point go? (a) 55.8 (b) 0.0558 (c) 5.58 (d) 0.558
  7. 7.0.85 × 5 — where does the decimal point go? (a) 0.425 (b) 0.0425 (c) 42.5 (d) 4.25
  8. 8.0.25 × 13 — where does the decimal point go? (a) 3.25 (b) 0.0325 (c) 32.5 (d) 0.325
  9. 9.0.51 × 6 — where does the decimal point go? (a) 3.06 (b) 0.306 (c) 0.0306 (d) 30.6
  10. 10.6.6 × 0.7 — where does the decimal point go? (a) 0.462 (b) 4.62 (c) 46.2 (d) 0.0462
  11. 11.0.21 × 44 — where does the decimal point go? (a) 9.24 (b) 92.4 (c) 0.924 (d) 0.0924
  12. 12.3.9 × 1.7 — where does the decimal point go? (a) 66.3 (b) 6.63 (c) 0.663 (d) 0.0663
  13. 13.0.33 × 19 — where does the decimal point go? (a) 0.627 (b) 62.7 (c) 6.27 (d) 0.0627
  14. 14.0.18 × 4.6 — where does the decimal point go? (a) 0.00828 (b) 0.828 (c) 8.28 (d) 0.0828
  15. 15.2.2 × 0.8 — where does the decimal point go? (a) 0.176 (b) 1.76 (c) 0.0176 (d) 17.6
  16. 16.5.3 × 3 — where does the decimal point go? (a) 15.9 (b) 1.59 (c) 159 (d) 0.159
  17. 17.0.27 × 0.2 — where does the decimal point go? (a) 0.054 (b) 0.54 (c) 0.0054 (d) 0.00054
  18. 18.9.8 × 3.3 — where does the decimal point go? (a) 32.34 (b) 3.234 (c) 0.3234 (d) 323.4
  19. 19.0.42 × 3 — where does the decimal point go? (a) 0.0126 (b) 0.126 (c) 12.6 (d) 1.26
  20. 20.5.3 × 2.9 — where does the decimal point go? (a) 15.37 (b) 153.7 (c) 1.537 (d) 0.1537
  21. 21.6.3 × 1.2 — where does the decimal point go? (a) 0.0756 (b) 0.756 (c) 75.6 (d) 7.56
  22. 22.0.86 × 3 — where does the decimal point go? (a) 2.58 (b) 25.8 (c) 0.0258 (d) 0.258
  23. 23.7.7 × 15 — where does the decimal point go? (a) 1.155 (b) 1155 (c) 11.55 (d) 115.5
  24. 24.3.7 × 0.7 — where does the decimal point go? (a) 0.0259 (b) 0.259 (c) 2.59 (d) 25.9
  25. 25.5.7 × 14 — where does the decimal point go? (a) 0.798 (b) 79.8 (c) 798 (d) 7.98
  26. 26.0.36 × 3.6 — where does the decimal point go? (a) 1.296 (b) 0.01296 (c) 0.1296 (d) 12.96
  27. 27.0.63 × 14 — where does the decimal point go? (a) 0.882 (b) 0.0882 (c) 8.82 (d) 88.2
  28. 28.1.2 × 6 — where does the decimal point go? (a) 7.2 (b) 0.72 (c) 72 (d) 0.072
  29. 29.6.9 × 25 — where does the decimal point go? (a) 172.5 (b) 1.725 (c) 1725 (d) 17.25
  30. 30.0.17 × 0.7 — where does the decimal point go? (a) 0.119 (b) 1.19 (c) 0.0119 (d) 0.00119
  31. 31.7.4 × 2 — where does the decimal point go? (a) 0.148 (b) 14.8 (c) 148 (d) 1.48
  32. 32.0.62 × 2.6 — where does the decimal point go? (a) 16.12 (b) 1.612 (c) 0.1612 (d) 0.01612
  33. 33.6.3 × 0.2 — where does the decimal point go? (a) 0.126 (b) 1.26 (c) 0.0126 (d) 12.6
  34. 34.0.59 × 23 — where does the decimal point go? (a) 13.57 (b) 135.7 (c) 0.1357 (d) 1.357
  35. 35.0.34 × 2 — where does the decimal point go? (a) 0.68 (b) 0.068 (c) 0.0068 (d) 6.8
  36. 36.0.55 × 3 — where does the decimal point go? (a) 0.165 (b) 1.65 (c) 0.0165 (d) 16.5
  37. 37.0.77 × 48 — where does the decimal point go? (a) 369.6 (b) 0.3696 (c) 36.96 (d) 3.696
  38. 38.0.81 × 9 — where does the decimal point go? (a) 7.29 (b) 0.729 (c) 0.0729 (d) 72.9
  39. 39.0.21 × 8 — where does the decimal point go? (a) 0.0168 (b) 16.8 (c) 0.168 (d) 1.68
  40. 40.0.52 × 12 — where does the decimal point go? (a) 0.624 (b) 0.0624 (c) 62.4 (d) 6.24

Answer key

  1. 3.567
  2. 1.353
  3. 5.28
  4. 0.76
  5. 1.395
  6. 5.58
  7. 4.25
  8. 3.25
  9. 3.06
  10. 4.62
  11. 9.24
  12. 6.63
  13. 6.27
  14. 0.828
  15. 1.76
  16. 15.9
  17. 0.054
  18. 32.34
  19. 1.26
  20. 15.37
  21. 7.56
  22. 2.58
  23. 115.5
  24. 2.59
  25. 79.8
  26. 1.296
  27. 8.82
  28. 7.2
  29. 172.5
  30. 0.119
  31. 14.8
  32. 1.612
  33. 1.26
  34. 13.57
  35. 0.68
  36. 1.65
  37. 36.96
  38. 7.29
  39. 1.68
  40. 6.24

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