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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 276 · 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. 1.0.21 × 1.2 — where does the decimal point go? (a) 2.52 (b) 0.252 (c) 0.0252 (d) 0.00252
  2. 2.2.1 × 4 — where does the decimal point go? (a) 8.4 (b) 0.084 (c) 0.84 (d) 84
  3. 3.0.36 × 4.7 — where does the decimal point go? (a) 0.1692 (b) 1.692 (c) 16.92 (d) 0.01692
  4. 4.9.6 × 3.8 — where does the decimal point go? (a) 0.3648 (b) 3.648 (c) 36.48 (d) 364.8
  5. 5.0.48 × 0.6 — where does the decimal point go? (a) 2.88 (b) 0.288 (c) 0.0288 (d) 0.00288
  6. 6.6.7 × 9 — where does the decimal point go? (a) 60.3 (b) 0.603 (c) 603 (d) 6.03
  7. 7.8.8 × 2 — where does the decimal point go? (a) 1.76 (b) 176 (c) 0.176 (d) 17.6
  8. 8.0.63 × 4 — where does the decimal point go? (a) 0.252 (b) 2.52 (c) 0.0252 (d) 25.2
  9. 9.3.3 × 5 — where does the decimal point go? (a) 1.65 (b) 16.5 (c) 165 (d) 0.165
  10. 10.0.23 × 7 — where does the decimal point go? (a) 0.161 (b) 0.0161 (c) 16.1 (d) 1.61
  11. 11.0.98 × 3 — where does the decimal point go? (a) 0.0294 (b) 29.4 (c) 2.94 (d) 0.294
  12. 12.9.1 × 0.2 — where does the decimal point go? (a) 1.82 (b) 0.182 (c) 18.2 (d) 0.0182
  13. 13.0.87 × 3.1 — where does the decimal point go? (a) 2.697 (b) 26.97 (c) 0.02697 (d) 0.2697
  14. 14.0.57 × 4 — where does the decimal point go? (a) 2.28 (b) 22.8 (c) 0.228 (d) 0.0228
  15. 15.2.9 × 0.6 — where does the decimal point go? (a) 0.0174 (b) 0.174 (c) 17.4 (d) 1.74
  16. 16.1.4 × 0.9 — where does the decimal point go? (a) 0.0126 (b) 0.126 (c) 1.26 (d) 12.6
  17. 17.4.9 × 29 — where does the decimal point go? (a) 14.21 (b) 1.421 (c) 142.1 (d) 1421
  18. 18.0.47 × 2.5 — where does the decimal point go? (a) 11.75 (b) 1.175 (c) 0.01175 (d) 0.1175
  19. 19.5.2 × 0.9 — where does the decimal point go? (a) 0.0468 (b) 4.68 (c) 0.468 (d) 46.8
  20. 20.0.37 × 8 — where does the decimal point go? (a) 2.96 (b) 0.0296 (c) 0.296 (d) 29.6
  21. 21.0.84 × 32 — where does the decimal point go? (a) 268.8 (b) 2.688 (c) 26.88 (d) 0.2688
  22. 22.0.26 × 0.6 — where does the decimal point go? (a) 1.56 (b) 0.0156 (c) 0.00156 (d) 0.156
  23. 23.0.93 × 3.1 — where does the decimal point go? (a) 2.883 (b) 0.02883 (c) 28.83 (d) 0.2883
  24. 24.4.1 × 1.6 — where does the decimal point go? (a) 0.0656 (b) 65.6 (c) 0.656 (d) 6.56
  25. 25.4.1 × 3.5 — where does the decimal point go? (a) 14.35 (b) 143.5 (c) 0.1435 (d) 1.435
  26. 26.0.88 × 1.2 — where does the decimal point go? (a) 0.01056 (b) 1.056 (c) 0.1056 (d) 10.56
  27. 27.6.5 × 0.5 — where does the decimal point go? (a) 0.325 (b) 0.0325 (c) 3.25 (d) 32.5
  28. 28.0.34 × 3 — where does the decimal point go? (a) 1.02 (b) 10.2 (c) 0.102 (d) 0.0102
  29. 29.5.3 × 2.9 — where does the decimal point go? (a) 153.7 (b) 0.1537 (c) 15.37 (d) 1.537
  30. 30.8.6 × 21 — where does the decimal point go? (a) 1.806 (b) 18.06 (c) 180.6 (d) 1806
  31. 31.8.2 × 0.9 — where does the decimal point go? (a) 0.0738 (b) 73.8 (c) 7.38 (d) 0.738
  32. 32.0.75 × 7 — where does the decimal point go? (a) 52.5 (b) 0.525 (c) 5.25 (d) 0.0525
  33. 33.8.3 × 4.1 — where does the decimal point go? (a) 3.403 (b) 340.3 (c) 0.3403 (d) 34.03
  34. 34.0.92 × 2.9 — where does the decimal point go? (a) 0.2668 (b) 2.668 (c) 26.68 (d) 0.02668
  35. 35.0.88 × 2.6 — where does the decimal point go? (a) 0.2288 (b) 2.288 (c) 0.02288 (d) 22.88
  36. 36.0.27 × 34 — where does the decimal point go? (a) 9.18 (b) 0.918 (c) 0.0918 (d) 91.8
  37. 37.2.6 × 0.6 — where does the decimal point go? (a) 15.6 (b) 0.0156 (c) 0.156 (d) 1.56
  38. 38.0.41 × 8 — where does the decimal point go? (a) 3.28 (b) 0.0328 (c) 0.328 (d) 32.8
  39. 39.0.21 × 3.5 — where does the decimal point go? (a) 0.735 (b) 0.00735 (c) 7.35 (d) 0.0735
  40. 40.0.71 × 2.4 — where does the decimal point go? (a) 0.01704 (b) 1.704 (c) 17.04 (d) 0.1704

Answer key

  1. 0.252
  2. 8.4
  3. 1.692
  4. 36.48
  5. 0.288
  6. 60.3
  7. 17.6
  8. 2.52
  9. 16.5
  10. 1.61
  11. 2.94
  12. 1.82
  13. 2.697
  14. 2.28
  15. 1.74
  16. 1.26
  17. 142.1
  18. 1.175
  19. 4.68
  20. 2.96
  21. 26.88
  22. 0.156
  23. 2.883
  24. 6.56
  25. 14.35
  26. 1.056
  27. 3.25
  28. 1.02
  29. 15.37
  30. 180.6
  31. 7.38
  32. 5.25
  33. 34.03
  34. 2.668
  35. 2.288
  36. 9.18
  37. 1.56
  38. 3.28
  39. 0.735
  40. 1.704

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