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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 833 · 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. 1.0.37 × 0.2 — where does the decimal point go? (a) 0.74 (b) 0.00074 (c) 0.0074 (d) 0.074
  2. 2.0.46 × 33 — where does the decimal point go? (a) 1.518 (b) 0.1518 (c) 151.8 (d) 15.18
  3. 3.0.33 × 4.2 — where does the decimal point go? (a) 0.01386 (b) 1.386 (c) 0.1386 (d) 13.86
  4. 4.0.69 × 18 — where does the decimal point go? (a) 124.2 (b) 1.242 (c) 0.1242 (d) 12.42
  5. 5.0.81 × 42 — where does the decimal point go? (a) 0.3402 (b) 3.402 (c) 340.2 (d) 34.02
  6. 6.0.26 × 9 — where does the decimal point go? (a) 2.34 (b) 23.4 (c) 0.0234 (d) 0.234
  7. 7.0.26 × 3 — where does the decimal point go? (a) 0.0078 (b) 0.78 (c) 7.8 (d) 0.078
  8. 8.7.8 × 0.3 — where does the decimal point go? (a) 0.0234 (b) 2.34 (c) 23.4 (d) 0.234
  9. 9.6.3 × 6 — where does the decimal point go? (a) 0.378 (b) 378 (c) 3.78 (d) 37.8
  10. 10.4.3 × 1.5 — where does the decimal point go? (a) 6.45 (b) 0.0645 (c) 0.645 (d) 64.5
  11. 11.0.76 × 0.6 — where does the decimal point go? (a) 0.00456 (b) 0.0456 (c) 4.56 (d) 0.456
  12. 12.9.2 × 21 — where does the decimal point go? (a) 193.2 (b) 1.932 (c) 1932 (d) 19.32
  13. 13.4.2 × 31 — where does the decimal point go? (a) 13.02 (b) 130.2 (c) 1.302 (d) 1302
  14. 14.0.36 × 2.7 — where does the decimal point go? (a) 0.00972 (b) 0.0972 (c) 9.72 (d) 0.972
  15. 15.0.19 × 0.6 — where does the decimal point go? (a) 0.0114 (b) 0.00114 (c) 0.114 (d) 1.14
  16. 16.7.2 × 2 — where does the decimal point go? (a) 144 (b) 14.4 (c) 1.44 (d) 0.144
  17. 17.0.69 × 0.3 — where does the decimal point go? (a) 0.00207 (b) 0.207 (c) 2.07 (d) 0.0207
  18. 18.8.1 × 4.2 — where does the decimal point go? (a) 3.402 (b) 34.02 (c) 340.2 (d) 0.3402
  19. 19.0.79 × 0.7 — where does the decimal point go? (a) 0.553 (b) 0.00553 (c) 0.0553 (d) 5.53
  20. 20.0.52 × 2 — where does the decimal point go? (a) 10.4 (b) 1.04 (c) 0.0104 (d) 0.104
  21. 21.0.39 × 3.7 — where does the decimal point go? (a) 14.43 (b) 0.01443 (c) 1.443 (d) 0.1443
  22. 22.0.49 × 1.9 — where does the decimal point go? (a) 9.31 (b) 0.0931 (c) 0.00931 (d) 0.931
  23. 23.8.6 × 1.3 — where does the decimal point go? (a) 1.118 (b) 0.1118 (c) 111.8 (d) 11.18
  24. 24.0.14 × 0.2 — where does the decimal point go? (a) 0.0028 (b) 0.028 (c) 0.00028 (d) 0.28
  25. 25.3.1 × 18 — where does the decimal point go? (a) 5.58 (b) 558 (c) 0.558 (d) 55.8
  26. 26.0.41 × 2.1 — where does the decimal point go? (a) 0.00861 (b) 8.61 (c) 0.0861 (d) 0.861
  27. 27.0.91 × 3 — where does the decimal point go? (a) 27.3 (b) 2.73 (c) 0.273 (d) 0.0273
  28. 28.3.2 × 2 — where does the decimal point go? (a) 64 (b) 0.64 (c) 6.4 (d) 0.064
  29. 29.0.93 × 7 — where does the decimal point go? (a) 0.651 (b) 6.51 (c) 65.1 (d) 0.0651
  30. 30.0.61 × 2 — where does the decimal point go? (a) 0.122 (b) 1.22 (c) 12.2 (d) 0.0122
  31. 31.0.72 × 42 — where does the decimal point go? (a) 3.024 (b) 302.4 (c) 0.3024 (d) 30.24
  32. 32.0.21 × 49 — where does the decimal point go? (a) 0.1029 (b) 10.29 (c) 1.029 (d) 102.9
  33. 33.3.5 × 5 — where does the decimal point go? (a) 17.5 (b) 0.175 (c) 1.75 (d) 175
  34. 34.7.2 × 9 — where does the decimal point go? (a) 64.8 (b) 648 (c) 6.48 (d) 0.648
  35. 35.4.1 × 0.4 — where does the decimal point go? (a) 0.164 (b) 16.4 (c) 0.0164 (d) 1.64
  36. 36.1.5 × 1.5 — where does the decimal point go? (a) 0.0225 (b) 22.5 (c) 0.225 (d) 2.25
  37. 37.0.14 × 9 — where does the decimal point go? (a) 1.26 (b) 0.0126 (c) 12.6 (d) 0.126
  38. 38.0.52 × 0.2 — where does the decimal point go? (a) 0.00104 (b) 0.104 (c) 0.0104 (d) 1.04
  39. 39.3.9 × 5 — where does the decimal point go? (a) 0.195 (b) 195 (c) 19.5 (d) 1.95
  40. 40.9.6 × 7 — where does the decimal point go? (a) 6.72 (b) 672 (c) 67.2 (d) 0.672

Answer key

  1. 0.074
  2. 15.18
  3. 1.386
  4. 12.42
  5. 34.02
  6. 2.34
  7. 0.78
  8. 2.34
  9. 37.8
  10. 6.45
  11. 0.456
  12. 193.2
  13. 130.2
  14. 0.972
  15. 0.114
  16. 14.4
  17. 0.207
  18. 34.02
  19. 0.553
  20. 1.04
  21. 1.443
  22. 0.931
  23. 11.18
  24. 0.028
  25. 55.8
  26. 0.861
  27. 2.73
  28. 6.4
  29. 6.51
  30. 1.22
  31. 30.24
  32. 10.29
  33. 17.5
  34. 64.8
  35. 1.64
  36. 2.25
  37. 1.26
  38. 0.104
  39. 19.5
  40. 67.2

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