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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 640 · 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. 1.9.6 × 3.7 — where does the decimal point go? (a) 0.3552 (b) 355.2 (c) 3.552 (d) 35.52
  2. 2.5.1 × 8 — where does the decimal point go? (a) 408 (b) 40.8 (c) 0.408 (d) 4.08
  3. 3.1.7 × 31 — where does the decimal point go? (a) 5.27 (b) 52.7 (c) 0.527 (d) 527
  4. 4.2.3 × 31 — where does the decimal point go? (a) 0.713 (b) 7.13 (c) 713 (d) 71.3
  5. 5.2.9 × 2 — where does the decimal point go? (a) 0.58 (b) 5.8 (c) 0.058 (d) 58
  6. 6.0.25 × 9 — where does the decimal point go? (a) 0.225 (b) 22.5 (c) 2.25 (d) 0.0225
  7. 7.8.7 × 5 — where does the decimal point go? (a) 0.435 (b) 435 (c) 4.35 (d) 43.5
  8. 8.5.3 × 3 — where does the decimal point go? (a) 15.9 (b) 159 (c) 0.159 (d) 1.59
  9. 9.0.91 × 28 — where does the decimal point go? (a) 2.548 (b) 254.8 (c) 25.48 (d) 0.2548
  10. 10.3.5 × 7 — where does the decimal point go? (a) 24.5 (b) 245 (c) 0.245 (d) 2.45
  11. 11.0.78 × 1.6 — where does the decimal point go? (a) 0.01248 (b) 12.48 (c) 0.1248 (d) 1.248
  12. 12.2.2 × 2 — where does the decimal point go? (a) 0.044 (b) 44 (c) 4.4 (d) 0.44
  13. 13.5.1 × 0.9 — where does the decimal point go? (a) 0.0459 (b) 0.459 (c) 4.59 (d) 45.9
  14. 14.0.98 × 3.3 — where does the decimal point go? (a) 0.3234 (b) 0.03234 (c) 32.34 (d) 3.234
  15. 15.0.69 × 0.9 — where does the decimal point go? (a) 6.21 (b) 0.00621 (c) 0.621 (d) 0.0621
  16. 16.0.91 × 2.4 — where does the decimal point go? (a) 0.2184 (b) 2.184 (c) 21.84 (d) 0.02184
  17. 17.2.4 × 2.2 — where does the decimal point go? (a) 0.0528 (b) 5.28 (c) 0.528 (d) 52.8
  18. 18.0.36 × 0.9 — where does the decimal point go? (a) 3.24 (b) 0.324 (c) 0.0324 (d) 0.00324
  19. 19.1.9 × 39 — where does the decimal point go? (a) 741 (b) 0.741 (c) 7.41 (d) 74.1
  20. 20.0.87 × 11 — where does the decimal point go? (a) 0.957 (b) 0.0957 (c) 9.57 (d) 95.7
  21. 21.0.43 × 44 — where does the decimal point go? (a) 189.2 (b) 0.1892 (c) 1.892 (d) 18.92
  22. 22.8.7 × 9 — where does the decimal point go? (a) 7.83 (b) 783 (c) 0.783 (d) 78.3
  23. 23.0.84 × 3.6 — where does the decimal point go? (a) 0.03024 (b) 30.24 (c) 0.3024 (d) 3.024
  24. 24.0.58 × 3.1 — where does the decimal point go? (a) 0.1798 (b) 1.798 (c) 0.01798 (d) 17.98
  25. 25.0.22 × 38 — where does the decimal point go? (a) 0.0836 (b) 0.836 (c) 83.6 (d) 8.36
  26. 26.7.6 × 38 — where does the decimal point go? (a) 288.8 (b) 2.888 (c) 28.88 (d) 2888
  27. 27.8.7 × 12 — where does the decimal point go? (a) 1.044 (b) 1044 (c) 104.4 (d) 10.44
  28. 28.3.9 × 1.6 — where does the decimal point go? (a) 0.0624 (b) 0.624 (c) 62.4 (d) 6.24
  29. 29.0.72 × 4 — where does the decimal point go? (a) 0.288 (b) 0.0288 (c) 2.88 (d) 28.8
  30. 30.8.6 × 1.2 — where does the decimal point go? (a) 0.1032 (b) 10.32 (c) 103.2 (d) 1.032
  31. 31.8.2 × 1.9 — where does the decimal point go? (a) 15.58 (b) 1.558 (c) 155.8 (d) 0.1558
  32. 32.0.99 × 4.9 — where does the decimal point go? (a) 0.04851 (b) 0.4851 (c) 48.51 (d) 4.851
  33. 33.3.5 × 19 — where does the decimal point go? (a) 66.5 (b) 665 (c) 0.665 (d) 6.65
  34. 34.0.86 × 8 — where does the decimal point go? (a) 0.688 (b) 6.88 (c) 0.0688 (d) 68.8
  35. 35.0.29 × 17 — where does the decimal point go? (a) 0.0493 (b) 0.493 (c) 49.3 (d) 4.93
  36. 36.5.6 × 0.6 — where does the decimal point go? (a) 3.36 (b) 0.336 (c) 33.6 (d) 0.0336
  37. 37.3.7 × 27 — where does the decimal point go? (a) 99.9 (b) 0.999 (c) 9.99 (d) 999
  38. 38.0.73 × 0.9 — where does the decimal point go? (a) 0.0657 (b) 6.57 (c) 0.00657 (d) 0.657
  39. 39.3.4 × 1.7 — where does the decimal point go? (a) 5.78 (b) 0.578 (c) 0.0578 (d) 57.8
  40. 40.0.49 × 4 — where does the decimal point go? (a) 1.96 (b) 0.196 (c) 0.0196 (d) 19.6

Answer key

  1. 35.52
  2. 40.8
  3. 52.7
  4. 71.3
  5. 5.8
  6. 2.25
  7. 43.5
  8. 15.9
  9. 25.48
  10. 24.5
  11. 1.248
  12. 4.4
  13. 4.59
  14. 3.234
  15. 0.621
  16. 2.184
  17. 5.28
  18. 0.324
  19. 74.1
  20. 9.57
  21. 18.92
  22. 78.3
  23. 3.024
  24. 1.798
  25. 8.36
  26. 288.8
  27. 104.4
  28. 6.24
  29. 2.88
  30. 10.32
  31. 15.58
  32. 4.851
  33. 66.5
  34. 6.88
  35. 4.93
  36. 3.36
  37. 99.9
  38. 0.657
  39. 5.78
  40. 1.96

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