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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 232 · 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. 1.2.7 × 9 — where does the decimal point go? (a) 24.3 (b) 2.43 (c) 243 (d) 0.243
  2. 2.0.14 × 2 — where does the decimal point go? (a) 0.0028 (b) 0.28 (c) 0.028 (d) 2.8
  3. 3.9.1 × 17 — where does the decimal point go? (a) 154.7 (b) 15.47 (c) 1.547 (d) 1547
  4. 4.0.68 × 9 — where does the decimal point go? (a) 61.2 (b) 0.0612 (c) 0.612 (d) 6.12
  5. 5.0.51 × 29 — where does the decimal point go? (a) 0.1479 (b) 147.9 (c) 14.79 (d) 1.479
  6. 6.6.2 × 4 — where does the decimal point go? (a) 248 (b) 24.8 (c) 0.248 (d) 2.48
  7. 7.0.93 × 7 — where does the decimal point go? (a) 0.651 (b) 6.51 (c) 0.0651 (d) 65.1
  8. 8.6.7 × 1.5 — where does the decimal point go? (a) 0.1005 (b) 100.5 (c) 10.05 (d) 1.005
  9. 9.0.91 × 24 — where does the decimal point go? (a) 0.2184 (b) 218.4 (c) 2.184 (d) 21.84
  10. 10.0.22 × 3.7 — where does the decimal point go? (a) 0.0814 (b) 0.814 (c) 0.00814 (d) 8.14
  11. 11.0.88 × 3 — where does the decimal point go? (a) 2.64 (b) 0.0264 (c) 26.4 (d) 0.264
  12. 12.0.17 × 0.6 — where does the decimal point go? (a) 0.102 (b) 0.0102 (c) 0.00102 (d) 1.02
  13. 13.1.2 × 2.9 — where does the decimal point go? (a) 3.48 (b) 0.0348 (c) 34.8 (d) 0.348
  14. 14.4.5 × 31 — where does the decimal point go? (a) 139.5 (b) 1.395 (c) 13.95 (d) 1395
  15. 15.0.66 × 6 — where does the decimal point go? (a) 39.6 (b) 0.0396 (c) 3.96 (d) 0.396
  16. 16.7.2 × 0.8 — where does the decimal point go? (a) 0.576 (b) 57.6 (c) 0.0576 (d) 5.76
  17. 17.0.28 × 0.9 — where does the decimal point go? (a) 0.00252 (b) 2.52 (c) 0.252 (d) 0.0252
  18. 18.0.58 × 9 — where does the decimal point go? (a) 52.2 (b) 0.0522 (c) 5.22 (d) 0.522
  19. 19.8.4 × 47 — where does the decimal point go? (a) 394.8 (b) 3.948 (c) 3948 (d) 39.48
  20. 20.6.3 × 0.6 — where does the decimal point go? (a) 3.78 (b) 0.378 (c) 37.8 (d) 0.0378
  21. 21.3.3 × 0.2 — where does the decimal point go? (a) 0.066 (b) 0.66 (c) 0.0066 (d) 6.6
  22. 22.4.6 × 9 — where does the decimal point go? (a) 41.4 (b) 0.414 (c) 414 (d) 4.14
  23. 23.2.2 × 4.8 — where does the decimal point go? (a) 105.6 (b) 10.56 (c) 1.056 (d) 0.1056
  24. 24.0.98 × 3.3 — where does the decimal point go? (a) 3.234 (b) 0.03234 (c) 0.3234 (d) 32.34
  25. 25.1.2 × 0.2 — where does the decimal point go? (a) 0.024 (b) 0.24 (c) 2.4 (d) 0.0024
  26. 26.9.7 × 1.3 — where does the decimal point go? (a) 0.1261 (b) 12.61 (c) 1.261 (d) 126.1
  27. 27.0.66 × 12 — where does the decimal point go? (a) 7.92 (b) 79.2 (c) 0.792 (d) 0.0792
  28. 28.8.5 × 13 — where does the decimal point go? (a) 1.105 (b) 11.05 (c) 110.5 (d) 1105
  29. 29.0.46 × 4.9 — where does the decimal point go? (a) 22.54 (b) 0.2254 (c) 2.254 (d) 0.02254
  30. 30.3.7 × 3.3 — where does the decimal point go? (a) 12.21 (b) 0.1221 (c) 122.1 (d) 1.221
  31. 31.4.2 × 2 — where does the decimal point go? (a) 0.084 (b) 84 (c) 8.4 (d) 0.84
  32. 32.4.1 × 3.9 — where does the decimal point go? (a) 159.9 (b) 0.1599 (c) 15.99 (d) 1.599
  33. 33.1.9 × 0.8 — where does the decimal point go? (a) 15.2 (b) 0.152 (c) 0.0152 (d) 1.52
  34. 34.0.19 × 48 — where does the decimal point go? (a) 91.2 (b) 0.912 (c) 9.12 (d) 0.0912
  35. 35.9.8 × 18 — where does the decimal point go? (a) 176.4 (b) 1764 (c) 1.764 (d) 17.64
  36. 36.0.92 × 3 — where does the decimal point go? (a) 27.6 (b) 0.276 (c) 2.76 (d) 0.0276
  37. 37.1.3 × 6 — where does the decimal point go? (a) 7.8 (b) 78 (c) 0.078 (d) 0.78
  38. 38.1.5 × 13 — where does the decimal point go? (a) 19.5 (b) 1.95 (c) 195 (d) 0.195
  39. 39.0.29 × 42 — where does the decimal point go? (a) 0.1218 (b) 121.8 (c) 12.18 (d) 1.218
  40. 40.8.2 × 13 — where does the decimal point go? (a) 106.6 (b) 1066 (c) 1.066 (d) 10.66

Answer key

  1. 24.3
  2. 0.28
  3. 154.7
  4. 6.12
  5. 14.79
  6. 24.8
  7. 6.51
  8. 10.05
  9. 21.84
  10. 0.814
  11. 2.64
  12. 0.102
  13. 3.48
  14. 139.5
  15. 3.96
  16. 5.76
  17. 0.252
  18. 5.22
  19. 394.8
  20. 3.78
  21. 0.66
  22. 41.4
  23. 10.56
  24. 3.234
  25. 0.24
  26. 12.61
  27. 7.92
  28. 110.5
  29. 2.254
  30. 12.21
  31. 8.4
  32. 15.99
  33. 1.52
  34. 9.12
  35. 176.4
  36. 2.76
  37. 7.8
  38. 19.5
  39. 12.18
  40. 106.6

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