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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 667 · 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. 1.0.12 × 1.7 — where does the decimal point go? (a) 0.0204 (b) 2.04 (c) 0.00204 (d) 0.204
  2. 2.7.8 × 3.4 — where does the decimal point go? (a) 26.52 (b) 2.652 (c) 265.2 (d) 0.2652
  3. 3.0.26 × 2 — where does the decimal point go? (a) 5.2 (b) 0.0052 (c) 0.52 (d) 0.052
  4. 4.0.97 × 26 — where does the decimal point go? (a) 252.2 (b) 0.2522 (c) 25.22 (d) 2.522
  5. 5.7.7 × 0.3 — where does the decimal point go? (a) 0.0231 (b) 0.231 (c) 23.1 (d) 2.31
  6. 6.7.6 × 7 — where does the decimal point go? (a) 0.532 (b) 5.32 (c) 53.2 (d) 532
  7. 7.0.59 × 0.2 — where does the decimal point go? (a) 0.00118 (b) 0.0118 (c) 1.18 (d) 0.118
  8. 8.0.71 × 0.3 — where does the decimal point go? (a) 0.00213 (b) 0.213 (c) 0.0213 (d) 2.13
  9. 9.0.37 × 1.8 — where does the decimal point go? (a) 0.0666 (b) 6.66 (c) 0.666 (d) 0.00666
  10. 10.8.3 × 2 — where does the decimal point go? (a) 16.6 (b) 1.66 (c) 0.166 (d) 166
  11. 11.0.67 × 6 — where does the decimal point go? (a) 0.0402 (b) 0.402 (c) 4.02 (d) 40.2
  12. 12.1.6 × 9 — where does the decimal point go? (a) 144 (b) 14.4 (c) 1.44 (d) 0.144
  13. 13.0.73 × 0.4 — where does the decimal point go? (a) 0.292 (b) 0.0292 (c) 0.00292 (d) 2.92
  14. 14.5.1 × 2 — where does the decimal point go? (a) 0.102 (b) 10.2 (c) 102 (d) 1.02
  15. 15.0.77 × 2 — where does the decimal point go? (a) 15.4 (b) 1.54 (c) 0.0154 (d) 0.154
  16. 16.0.99 × 2.5 — where does the decimal point go? (a) 0.2475 (b) 24.75 (c) 2.475 (d) 0.02475
  17. 17.9.9 × 15 — where does the decimal point go? (a) 148.5 (b) 1.485 (c) 1485 (d) 14.85
  18. 18.3.8 × 4 — where does the decimal point go? (a) 1.52 (b) 152 (c) 0.152 (d) 15.2
  19. 19.0.56 × 1.7 — where does the decimal point go? (a) 0.952 (b) 0.0952 (c) 9.52 (d) 0.00952
  20. 20.0.84 × 17 — where does the decimal point go? (a) 142.8 (b) 14.28 (c) 0.1428 (d) 1.428
  21. 21.0.67 × 2 — where does the decimal point go? (a) 13.4 (b) 1.34 (c) 0.0134 (d) 0.134
  22. 22.4.3 × 0.6 — where does the decimal point go? (a) 0.258 (b) 25.8 (c) 2.58 (d) 0.0258
  23. 23.0.13 × 3.6 — where does the decimal point go? (a) 0.468 (b) 0.0468 (c) 4.68 (d) 0.00468
  24. 24.0.95 × 0.5 — where does the decimal point go? (a) 0.0475 (b) 4.75 (c) 0.00475 (d) 0.475
  25. 25.3.5 × 39 — where does the decimal point go? (a) 1.365 (b) 136.5 (c) 1365 (d) 13.65
  26. 26.0.99 × 1.2 — where does the decimal point go? (a) 1.188 (b) 0.1188 (c) 0.01188 (d) 11.88
  27. 27.0.92 × 3 — where does the decimal point go? (a) 0.0276 (b) 27.6 (c) 2.76 (d) 0.276
  28. 28.0.34 × 3.7 — where does the decimal point go? (a) 0.01258 (b) 12.58 (c) 1.258 (d) 0.1258
  29. 29.1.9 × 6 — where does the decimal point go? (a) 11.4 (b) 0.114 (c) 114 (d) 1.14
  30. 30.5.3 × 2 — where does the decimal point go? (a) 0.106 (b) 1.06 (c) 106 (d) 10.6
  31. 31.8.6 × 3 — where does the decimal point go? (a) 25.8 (b) 258 (c) 0.258 (d) 2.58
  32. 32.6.6 × 23 — where does the decimal point go? (a) 1.518 (b) 151.8 (c) 1518 (d) 15.18
  33. 33.0.91 × 45 — where does the decimal point go? (a) 4.095 (b) 409.5 (c) 0.4095 (d) 40.95
  34. 34.0.72 × 0.8 — where does the decimal point go? (a) 0.0576 (b) 5.76 (c) 0.576 (d) 0.00576
  35. 35.0.26 × 4.4 — where does the decimal point go? (a) 11.44 (b) 0.1144 (c) 1.144 (d) 0.01144
  36. 36.0.47 × 0.3 — where does the decimal point go? (a) 0.0141 (b) 1.41 (c) 0.141 (d) 0.00141
  37. 37.0.42 × 4 — where does the decimal point go? (a) 0.168 (b) 16.8 (c) 0.0168 (d) 1.68
  38. 38.0.59 × 3 — where does the decimal point go? (a) 0.0177 (b) 1.77 (c) 17.7 (d) 0.177
  39. 39.6.7 × 0.5 — where does the decimal point go? (a) 3.35 (b) 0.0335 (c) 0.335 (d) 33.5
  40. 40.1.6 × 34 — where does the decimal point go? (a) 5.44 (b) 544 (c) 0.544 (d) 54.4

Answer key

  1. 0.204
  2. 26.52
  3. 0.52
  4. 25.22
  5. 2.31
  6. 53.2
  7. 0.118
  8. 0.213
  9. 0.666
  10. 16.6
  11. 4.02
  12. 14.4
  13. 0.292
  14. 10.2
  15. 1.54
  16. 2.475
  17. 148.5
  18. 15.2
  19. 0.952
  20. 14.28
  21. 1.34
  22. 2.58
  23. 0.468
  24. 0.475
  25. 136.5
  26. 1.188
  27. 2.76
  28. 1.258
  29. 11.4
  30. 10.6
  31. 25.8
  32. 151.8
  33. 40.95
  34. 0.576
  35. 1.144
  36. 0.141
  37. 1.68
  38. 1.77
  39. 3.35
  40. 54.4

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