← Where does the decimal point go? lesson New set →

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 261 · 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. 1.7.1 × 0.7 — where does the decimal point go? (a) 0.0497 (b) 4.97 (c) 49.7 (d) 0.497
  2. 2.3.3 × 1.7 — where does the decimal point go? (a) 5.61 (b) 56.1 (c) 0.0561 (d) 0.561
  3. 3.8.4 × 8 — where does the decimal point go? (a) 0.672 (b) 6.72 (c) 672 (d) 67.2
  4. 4.5.3 × 9 — where does the decimal point go? (a) 0.477 (b) 47.7 (c) 477 (d) 4.77
  5. 5.0.57 × 6 — where does the decimal point go? (a) 34.2 (b) 0.0342 (c) 0.342 (d) 3.42
  6. 6.2.5 × 37 — where does the decimal point go? (a) 925 (b) 9.25 (c) 92.5 (d) 0.925
  7. 7.6.2 × 19 — where does the decimal point go? (a) 11.78 (b) 1.178 (c) 1178 (d) 117.8
  8. 8.7.7 × 0.5 — where does the decimal point go? (a) 3.85 (b) 0.0385 (c) 38.5 (d) 0.385
  9. 9.9.4 × 0.9 — where does the decimal point go? (a) 0.846 (b) 84.6 (c) 0.0846 (d) 8.46
  10. 10.1.3 × 12 — where does the decimal point go? (a) 0.156 (b) 15.6 (c) 156 (d) 1.56
  11. 11.0.12 × 2 — where does the decimal point go? (a) 0.0024 (b) 2.4 (c) 0.024 (d) 0.24
  12. 12.0.27 × 1.1 — where does the decimal point go? (a) 0.297 (b) 0.00297 (c) 0.0297 (d) 2.97
  13. 13.4.1 × 2.8 — where does the decimal point go? (a) 11.48 (b) 114.8 (c) 0.1148 (d) 1.148
  14. 14.2.9 × 17 — where does the decimal point go? (a) 49.3 (b) 0.493 (c) 493 (d) 4.93
  15. 15.0.69 × 0.9 — where does the decimal point go? (a) 0.0621 (b) 0.621 (c) 0.00621 (d) 6.21
  16. 16.0.63 × 4 — where does the decimal point go? (a) 0.252 (b) 0.0252 (c) 2.52 (d) 25.2
  17. 17.0.95 × 5 — where does the decimal point go? (a) 4.75 (b) 0.475 (c) 47.5 (d) 0.0475
  18. 18.0.68 × 34 — where does the decimal point go? (a) 23.12 (b) 0.2312 (c) 2.312 (d) 231.2
  19. 19.8.8 × 0.8 — where does the decimal point go? (a) 0.704 (b) 7.04 (c) 70.4 (d) 0.0704
  20. 20.0.35 × 0.3 — where does the decimal point go? (a) 0.105 (b) 0.00105 (c) 1.05 (d) 0.0105
  21. 21.0.38 × 13 — where does the decimal point go? (a) 0.0494 (b) 49.4 (c) 0.494 (d) 4.94
  22. 22.0.93 × 0.2 — where does the decimal point go? (a) 0.00186 (b) 0.0186 (c) 1.86 (d) 0.186
  23. 23.0.13 × 3.5 — where does the decimal point go? (a) 0.455 (b) 0.0455 (c) 0.00455 (d) 4.55
  24. 24.4.4 × 19 — where does the decimal point go? (a) 83.6 (b) 836 (c) 0.836 (d) 8.36
  25. 25.5.8 × 0.2 — where does the decimal point go? (a) 0.116 (b) 1.16 (c) 0.0116 (d) 11.6
  26. 26.0.34 × 0.4 — where does the decimal point go? (a) 1.36 (b) 0.136 (c) 0.0136 (d) 0.00136
  27. 27.6.6 × 39 — where does the decimal point go? (a) 257.4 (b) 2574 (c) 25.74 (d) 2.574
  28. 28.2.9 × 33 — where does the decimal point go? (a) 957 (b) 9.57 (c) 0.957 (d) 95.7
  29. 29.8.8 × 41 — where does the decimal point go? (a) 36.08 (b) 360.8 (c) 3.608 (d) 3608
  30. 30.1.7 × 29 — where does the decimal point go? (a) 0.493 (b) 49.3 (c) 4.93 (d) 493
  31. 31.0.36 × 3.2 — where does the decimal point go? (a) 1.152 (b) 0.01152 (c) 11.52 (d) 0.1152
  32. 32.0.79 × 2 — where does the decimal point go? (a) 1.58 (b) 0.158 (c) 0.0158 (d) 15.8
  33. 33.7.1 × 1.3 — where does the decimal point go? (a) 92.3 (b) 0.923 (c) 9.23 (d) 0.0923
  34. 34.8.2 × 4.6 — where does the decimal point go? (a) 3.772 (b) 0.3772 (c) 377.2 (d) 37.72
  35. 35.0.22 × 1.7 — where does the decimal point go? (a) 0.374 (b) 0.0374 (c) 0.00374 (d) 3.74
  36. 36.9.2 × 6 — where does the decimal point go? (a) 552 (b) 0.552 (c) 55.2 (d) 5.52
  37. 37.1.5 × 17 — where does the decimal point go? (a) 255 (b) 25.5 (c) 2.55 (d) 0.255
  38. 38.1.3 × 0.9 — where does the decimal point go? (a) 11.7 (b) 0.0117 (c) 1.17 (d) 0.117
  39. 39.1.9 × 39 — where does the decimal point go? (a) 74.1 (b) 0.741 (c) 741 (d) 7.41
  40. 40.0.33 × 3.8 — where does the decimal point go? (a) 12.54 (b) 0.01254 (c) 1.254 (d) 0.1254

Answer key

  1. 4.97
  2. 5.61
  3. 67.2
  4. 47.7
  5. 3.42
  6. 92.5
  7. 117.8
  8. 3.85
  9. 8.46
  10. 15.6
  11. 0.24
  12. 0.297
  13. 11.48
  14. 49.3
  15. 0.621
  16. 2.52
  17. 4.75
  18. 23.12
  19. 7.04
  20. 0.105
  21. 4.94
  22. 0.186
  23. 0.455
  24. 83.6
  25. 1.16
  26. 0.136
  27. 257.4
  28. 95.7
  29. 360.8
  30. 49.3
  31. 1.152
  32. 1.58
  33. 9.23
  34. 37.72
  35. 0.374
  36. 55.2
  37. 25.5
  38. 1.17
  39. 74.1
  40. 1.254

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks