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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 501 · 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. 1.0.47 × 15 — where does the decimal point go? (a) 0.705 (b) 7.05 (c) 70.5 (d) 0.0705
  2. 2.2.8 × 7 — where does the decimal point go? (a) 19.6 (b) 196 (c) 1.96 (d) 0.196
  3. 3.3.4 × 32 — where does the decimal point go? (a) 1.088 (b) 1088 (c) 108.8 (d) 10.88
  4. 4.4.3 × 4.6 — where does the decimal point go? (a) 1.978 (b) 19.78 (c) 197.8 (d) 0.1978
  5. 5.3.4 × 4.2 — where does the decimal point go? (a) 0.1428 (b) 14.28 (c) 142.8 (d) 1.428
  6. 6.0.93 × 0.6 — where does the decimal point go? (a) 5.58 (b) 0.558 (c) 0.0558 (d) 0.00558
  7. 7.0.63 × 49 — where does the decimal point go? (a) 3.087 (b) 30.87 (c) 0.3087 (d) 308.7
  8. 8.0.69 × 5 — where does the decimal point go? (a) 0.0345 (b) 3.45 (c) 34.5 (d) 0.345
  9. 9.6.1 × 2 — where does the decimal point go? (a) 12.2 (b) 0.122 (c) 122 (d) 1.22
  10. 10.0.49 × 4 — where does the decimal point go? (a) 19.6 (b) 0.0196 (c) 1.96 (d) 0.196
  11. 11.2.6 × 4.2 — where does the decimal point go? (a) 1.092 (b) 0.1092 (c) 109.2 (d) 10.92
  12. 12.5.9 × 0.3 — where does the decimal point go? (a) 0.0177 (b) 17.7 (c) 0.177 (d) 1.77
  13. 13.4.6 × 17 — where does the decimal point go? (a) 782 (b) 0.782 (c) 78.2 (d) 7.82
  14. 14.0.55 × 5 — where does the decimal point go? (a) 27.5 (b) 0.275 (c) 0.0275 (d) 2.75
  15. 15.0.33 × 8 — where does the decimal point go? (a) 2.64 (b) 26.4 (c) 0.264 (d) 0.0264
  16. 16.4.1 × 3 — where does the decimal point go? (a) 123 (b) 0.123 (c) 1.23 (d) 12.3
  17. 17.0.51 × 47 — where does the decimal point go? (a) 2.397 (b) 239.7 (c) 0.2397 (d) 23.97
  18. 18.0.21 × 1.1 — where does the decimal point go? (a) 0.231 (b) 0.00231 (c) 0.0231 (d) 2.31
  19. 19.0.53 × 0.4 — where does the decimal point go? (a) 0.00212 (b) 2.12 (c) 0.0212 (d) 0.212
  20. 20.0.57 × 2 — where does the decimal point go? (a) 1.14 (b) 0.0114 (c) 11.4 (d) 0.114
  21. 21.3.3 × 49 — where does the decimal point go? (a) 1.617 (b) 1617 (c) 161.7 (d) 16.17
  22. 22.0.25 × 0.9 — where does the decimal point go? (a) 0.225 (b) 0.00225 (c) 0.0225 (d) 2.25
  23. 23.0.32 × 18 — where does the decimal point go? (a) 0.0576 (b) 57.6 (c) 0.576 (d) 5.76
  24. 24.9.9 × 29 — where does the decimal point go? (a) 2871 (b) 28.71 (c) 2.871 (d) 287.1
  25. 25.0.87 × 8 — where does the decimal point go? (a) 0.0696 (b) 6.96 (c) 0.696 (d) 69.6
  26. 26.0.65 × 2.7 — where does the decimal point go? (a) 0.01755 (b) 0.1755 (c) 1.755 (d) 17.55
  27. 27.0.38 × 0.3 — where does the decimal point go? (a) 0.114 (b) 1.14 (c) 0.00114 (d) 0.0114
  28. 28.0.89 × 48 — where does the decimal point go? (a) 42.72 (b) 0.4272 (c) 427.2 (d) 4.272
  29. 29.0.71 × 9 — where does the decimal point go? (a) 63.9 (b) 0.639 (c) 0.0639 (d) 6.39
  30. 30.0.19 × 0.4 — where does the decimal point go? (a) 0.0076 (b) 0.076 (c) 0.00076 (d) 0.76
  31. 31.0.56 × 3.7 — where does the decimal point go? (a) 0.02072 (b) 0.2072 (c) 20.72 (d) 2.072
  32. 32.9.1 × 0.6 — where does the decimal point go? (a) 5.46 (b) 0.0546 (c) 0.546 (d) 54.6
  33. 33.1.4 × 4 — where does the decimal point go? (a) 5.6 (b) 0.056 (c) 56 (d) 0.56
  34. 34.3.1 × 38 — where does the decimal point go? (a) 1.178 (b) 11.78 (c) 117.8 (d) 1178
  35. 35.1.7 × 3.9 — where does the decimal point go? (a) 66.3 (b) 0.0663 (c) 6.63 (d) 0.663
  36. 36.4.6 × 4 — where does the decimal point go? (a) 1.84 (b) 0.184 (c) 18.4 (d) 184
  37. 37.0.69 × 31 — where does the decimal point go? (a) 213.9 (b) 0.2139 (c) 2.139 (d) 21.39
  38. 38.5.2 × 0.7 — where does the decimal point go? (a) 0.364 (b) 36.4 (c) 0.0364 (d) 3.64
  39. 39.2.7 × 0.2 — where does the decimal point go? (a) 5.4 (b) 0.054 (c) 0.54 (d) 0.0054
  40. 40.0.26 × 9 — where does the decimal point go? (a) 0.0234 (b) 2.34 (c) 0.234 (d) 23.4

Answer key

  1. 7.05
  2. 19.6
  3. 108.8
  4. 19.78
  5. 14.28
  6. 0.558
  7. 30.87
  8. 3.45
  9. 12.2
  10. 1.96
  11. 10.92
  12. 1.77
  13. 78.2
  14. 2.75
  15. 2.64
  16. 12.3
  17. 23.97
  18. 0.231
  19. 0.212
  20. 1.14
  21. 161.7
  22. 0.225
  23. 5.76
  24. 287.1
  25. 6.96
  26. 1.755
  27. 0.114
  28. 42.72
  29. 6.39
  30. 0.076
  31. 2.072
  32. 5.46
  33. 5.6
  34. 117.8
  35. 6.63
  36. 18.4
  37. 21.39
  38. 3.64
  39. 0.54
  40. 2.34

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