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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 597 · 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. 1.3.3 × 0.6 — where does the decimal point go? (a) 0.0198 (b) 1.98 (c) 0.198 (d) 19.8
  2. 2.0.99 × 3.3 — where does the decimal point go? (a) 3.267 (b) 32.67 (c) 0.3267 (d) 0.03267
  3. 3.4.9 × 0.9 — where does the decimal point go? (a) 0.441 (b) 0.0441 (c) 44.1 (d) 4.41
  4. 4.5.9 × 0.9 — where does the decimal point go? (a) 53.1 (b) 5.31 (c) 0.531 (d) 0.0531
  5. 5.0.48 × 32 — where does the decimal point go? (a) 1.536 (b) 153.6 (c) 15.36 (d) 0.1536
  6. 6.0.35 × 7 — where does the decimal point go? (a) 0.0245 (b) 0.245 (c) 24.5 (d) 2.45
  7. 7.7.9 × 7 — where does the decimal point go? (a) 5.53 (b) 0.553 (c) 553 (d) 55.3
  8. 8.2.9 × 12 — where does the decimal point go? (a) 3.48 (b) 0.348 (c) 348 (d) 34.8
  9. 9.8.4 × 0.7 — where does the decimal point go? (a) 0.588 (b) 58.8 (c) 0.0588 (d) 5.88
  10. 10.0.57 × 3 — where does the decimal point go? (a) 17.1 (b) 1.71 (c) 0.0171 (d) 0.171
  11. 11.0.17 × 3 — where does the decimal point go? (a) 0.0051 (b) 5.1 (c) 0.051 (d) 0.51
  12. 12.0.49 × 1.6 — where does the decimal point go? (a) 7.84 (b) 0.00784 (c) 0.0784 (d) 0.784
  13. 13.8.9 × 0.2 — where does the decimal point go? (a) 0.0178 (b) 17.8 (c) 1.78 (d) 0.178
  14. 14.0.21 × 0.5 — where does the decimal point go? (a) 0.105 (b) 1.05 (c) 0.0105 (d) 0.00105
  15. 15.0.21 × 0.9 — where does the decimal point go? (a) 0.0189 (b) 0.00189 (c) 0.189 (d) 1.89
  16. 16.0.61 × 1.2 — where does the decimal point go? (a) 7.32 (b) 0.00732 (c) 0.0732 (d) 0.732
  17. 17.0.87 × 8 — where does the decimal point go? (a) 0.696 (b) 0.0696 (c) 69.6 (d) 6.96
  18. 18.7.2 × 1.1 — where does the decimal point go? (a) 7.92 (b) 0.792 (c) 79.2 (d) 0.0792
  19. 19.0.72 × 29 — where does the decimal point go? (a) 2.088 (b) 20.88 (c) 0.2088 (d) 208.8
  20. 20.6.7 × 0.4 — where does the decimal point go? (a) 0.0268 (b) 0.268 (c) 2.68 (d) 26.8
  21. 21.7.6 × 6 — where does the decimal point go? (a) 456 (b) 0.456 (c) 4.56 (d) 45.6
  22. 22.0.45 × 0.9 — where does the decimal point go? (a) 0.0405 (b) 0.00405 (c) 4.05 (d) 0.405
  23. 23.9.8 × 41 — where does the decimal point go? (a) 40.18 (b) 401.8 (c) 4.018 (d) 4018
  24. 24.8.7 × 4 — where does the decimal point go? (a) 348 (b) 34.8 (c) 0.348 (d) 3.48
  25. 25.8.1 × 0.5 — where does the decimal point go? (a) 0.0405 (b) 4.05 (c) 40.5 (d) 0.405
  26. 26.1.7 × 3 — where does the decimal point go? (a) 0.51 (b) 0.051 (c) 5.1 (d) 51
  27. 27.0.67 × 0.6 — where does the decimal point go? (a) 0.0402 (b) 0.00402 (c) 0.402 (d) 4.02
  28. 28.0.52 × 37 — where does the decimal point go? (a) 192.4 (b) 1.924 (c) 19.24 (d) 0.1924
  29. 29.1.5 × 3 — where does the decimal point go? (a) 0.45 (b) 4.5 (c) 0.045 (d) 45
  30. 30.6.7 × 2 — where does the decimal point go? (a) 13.4 (b) 1.34 (c) 0.134 (d) 134
  31. 31.2.9 × 5 — where does the decimal point go? (a) 0.145 (b) 14.5 (c) 1.45 (d) 145
  32. 32.0.72 × 38 — where does the decimal point go? (a) 0.2736 (b) 273.6 (c) 27.36 (d) 2.736
  33. 33.5.2 × 46 — where does the decimal point go? (a) 23.92 (b) 2392 (c) 2.392 (d) 239.2
  34. 34.5.1 × 0.3 — where does the decimal point go? (a) 1.53 (b) 0.153 (c) 0.0153 (d) 15.3
  35. 35.0.47 × 3 — where does the decimal point go? (a) 1.41 (b) 0.0141 (c) 14.1 (d) 0.141
  36. 36.0.42 × 17 — where does the decimal point go? (a) 7.14 (b) 71.4 (c) 0.0714 (d) 0.714
  37. 37.1.6 × 4 — where does the decimal point go? (a) 0.064 (b) 64 (c) 6.4 (d) 0.64
  38. 38.7.4 × 8 — where does the decimal point go? (a) 592 (b) 5.92 (c) 59.2 (d) 0.592
  39. 39.3.7 × 44 — where does the decimal point go? (a) 16.28 (b) 1628 (c) 1.628 (d) 162.8
  40. 40.5.8 × 6 — where does the decimal point go? (a) 34.8 (b) 3.48 (c) 348 (d) 0.348

Answer key

  1. 1.98
  2. 3.267
  3. 4.41
  4. 5.31
  5. 15.36
  6. 2.45
  7. 55.3
  8. 34.8
  9. 5.88
  10. 1.71
  11. 0.51
  12. 0.784
  13. 1.78
  14. 0.105
  15. 0.189
  16. 0.732
  17. 6.96
  18. 7.92
  19. 20.88
  20. 2.68
  21. 45.6
  22. 0.405
  23. 401.8
  24. 34.8
  25. 4.05
  26. 5.1
  27. 0.402
  28. 19.24
  29. 4.5
  30. 13.4
  31. 14.5
  32. 27.36
  33. 239.2
  34. 1.53
  35. 1.41
  36. 7.14
  37. 6.4
  38. 59.2
  39. 162.8
  40. 34.8

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