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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 630 · 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. 1.0.73 × 0.9 — where does the decimal point go? (a) 0.657 (b) 0.0657 (c) 6.57 (d) 0.00657
  2. 2.0.61 × 4.8 — where does the decimal point go? (a) 29.28 (b) 0.2928 (c) 0.02928 (d) 2.928
  3. 3.0.54 × 2.4 — where does the decimal point go? (a) 0.1296 (b) 12.96 (c) 0.01296 (d) 1.296
  4. 4.3.6 × 1.3 — where does the decimal point go? (a) 0.468 (b) 46.8 (c) 4.68 (d) 0.0468
  5. 5.0.98 × 7 — where does the decimal point go? (a) 6.86 (b) 0.686 (c) 68.6 (d) 0.0686
  6. 6.3.8 × 9 — where does the decimal point go? (a) 3.42 (b) 342 (c) 0.342 (d) 34.2
  7. 7.0.42 × 0.4 — where does the decimal point go? (a) 0.168 (b) 0.0168 (c) 0.00168 (d) 1.68
  8. 8.2.8 × 4.6 — where does the decimal point go? (a) 1.288 (b) 12.88 (c) 0.1288 (d) 128.8
  9. 9.0.49 × 35 — where does the decimal point go? (a) 171.5 (b) 17.15 (c) 0.1715 (d) 1.715
  10. 10.0.78 × 13 — where does the decimal point go? (a) 10.14 (b) 101.4 (c) 1.014 (d) 0.1014
  11. 11.7.6 × 23 — where does the decimal point go? (a) 1748 (b) 17.48 (c) 174.8 (d) 1.748
  12. 12.8.9 × 4 — where does the decimal point go? (a) 35.6 (b) 356 (c) 0.356 (d) 3.56
  13. 13.9.7 × 4 — where does the decimal point go? (a) 388 (b) 0.388 (c) 38.8 (d) 3.88
  14. 14.1.2 × 4.3 — where does the decimal point go? (a) 51.6 (b) 0.516 (c) 0.0516 (d) 5.16
  15. 15.4.1 × 7 — where does the decimal point go? (a) 2.87 (b) 28.7 (c) 0.287 (d) 287
  16. 16.0.14 × 9 — where does the decimal point go? (a) 0.126 (b) 1.26 (c) 0.0126 (d) 12.6
  17. 17.1.4 × 3 — where does the decimal point go? (a) 4.2 (b) 0.42 (c) 42 (d) 0.042
  18. 18.2.7 × 16 — where does the decimal point go? (a) 4.32 (b) 0.432 (c) 432 (d) 43.2
  19. 19.0.89 × 0.2 — where does the decimal point go? (a) 1.78 (b) 0.178 (c) 0.00178 (d) 0.0178
  20. 20.0.87 × 42 — where does the decimal point go? (a) 3.654 (b) 365.4 (c) 36.54 (d) 0.3654
  21. 21.5.2 × 1.3 — where does the decimal point go? (a) 6.76 (b) 0.0676 (c) 67.6 (d) 0.676
  22. 22.9.7 × 7 — where does the decimal point go? (a) 679 (b) 67.9 (c) 6.79 (d) 0.679
  23. 23.2.7 × 9 — where does the decimal point go? (a) 2.43 (b) 243 (c) 0.243 (d) 24.3
  24. 24.0.52 × 8 — where does the decimal point go? (a) 4.16 (b) 41.6 (c) 0.0416 (d) 0.416
  25. 25.0.41 × 0.5 — where does the decimal point go? (a) 0.205 (b) 2.05 (c) 0.00205 (d) 0.0205
  26. 26.0.79 × 3.4 — where does the decimal point go? (a) 0.02686 (b) 0.2686 (c) 26.86 (d) 2.686
  27. 27.0.71 × 0.2 — where does the decimal point go? (a) 1.42 (b) 0.0142 (c) 0.00142 (d) 0.142
  28. 28.5.2 × 2 — where does the decimal point go? (a) 1.04 (b) 10.4 (c) 0.104 (d) 104
  29. 29.0.29 × 2.5 — where does the decimal point go? (a) 7.25 (b) 0.00725 (c) 0.0725 (d) 0.725
  30. 30.0.48 × 3 — where does the decimal point go? (a) 0.144 (b) 1.44 (c) 14.4 (d) 0.0144
  31. 31.0.34 × 4.8 — where does the decimal point go? (a) 0.1632 (b) 1.632 (c) 16.32 (d) 0.01632
  32. 32.0.61 × 41 — where does the decimal point go? (a) 250.1 (b) 2.501 (c) 0.2501 (d) 25.01
  33. 33.0.26 × 18 — where does the decimal point go? (a) 4.68 (b) 46.8 (c) 0.0468 (d) 0.468
  34. 34.1.8 × 24 — where does the decimal point go? (a) 0.432 (b) 43.2 (c) 432 (d) 4.32
  35. 35.9.6 × 29 — where does the decimal point go? (a) 27.84 (b) 278.4 (c) 2784 (d) 2.784
  36. 36.7.5 × 29 — where does the decimal point go? (a) 2.175 (b) 217.5 (c) 21.75 (d) 2175
  37. 37.6.5 × 1.5 — where does the decimal point go? (a) 0.0975 (b) 9.75 (c) 0.975 (d) 97.5
  38. 38.0.73 × 2.9 — where does the decimal point go? (a) 0.2117 (b) 21.17 (c) 0.02117 (d) 2.117
  39. 39.0.29 × 12 — where does the decimal point go? (a) 0.348 (b) 34.8 (c) 3.48 (d) 0.0348
  40. 40.0.56 × 22 — where does the decimal point go? (a) 12.32 (b) 123.2 (c) 1.232 (d) 0.1232

Answer key

  1. 0.657
  2. 2.928
  3. 1.296
  4. 4.68
  5. 6.86
  6. 34.2
  7. 0.168
  8. 12.88
  9. 17.15
  10. 10.14
  11. 174.8
  12. 35.6
  13. 38.8
  14. 5.16
  15. 28.7
  16. 1.26
  17. 4.2
  18. 43.2
  19. 0.178
  20. 36.54
  21. 6.76
  22. 67.9
  23. 24.3
  24. 4.16
  25. 0.205
  26. 2.686
  27. 0.142
  28. 10.4
  29. 0.725
  30. 1.44
  31. 1.632
  32. 25.01
  33. 4.68
  34. 43.2
  35. 278.4
  36. 217.5
  37. 9.75
  38. 2.117
  39. 3.48
  40. 12.32

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