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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 528 · 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. 1.9.7 × 3.4 — where does the decimal point go? (a) 0.3298 (b) 32.98 (c) 3.298 (d) 329.8
  2. 2.0.61 × 9 — where does the decimal point go? (a) 0.549 (b) 54.9 (c) 0.0549 (d) 5.49
  3. 3.8.5 × 0.7 — where does the decimal point go? (a) 0.595 (b) 5.95 (c) 59.5 (d) 0.0595
  4. 4.0.18 × 22 — where does the decimal point go? (a) 3.96 (b) 0.0396 (c) 39.6 (d) 0.396
  5. 5.0.82 × 11 — where does the decimal point go? (a) 9.02 (b) 0.0902 (c) 0.902 (d) 90.2
  6. 6.6.6 × 3 — where does the decimal point go? (a) 1.98 (b) 19.8 (c) 198 (d) 0.198
  7. 7.0.31 × 35 — where does the decimal point go? (a) 1.085 (b) 10.85 (c) 0.1085 (d) 108.5
  8. 8.1.8 × 1.1 — where does the decimal point go? (a) 19.8 (b) 0.0198 (c) 1.98 (d) 0.198
  9. 9.0.24 × 3 — where does the decimal point go? (a) 0.0072 (b) 0.72 (c) 7.2 (d) 0.072
  10. 10.4.6 × 6 — where does the decimal point go? (a) 2.76 (b) 27.6 (c) 0.276 (d) 276
  11. 11.1.4 × 2 — where does the decimal point go? (a) 0.028 (b) 0.28 (c) 28 (d) 2.8
  12. 12.1.3 × 0.3 — where does the decimal point go? (a) 3.9 (b) 0.0039 (c) 0.39 (d) 0.039
  13. 13.1.9 × 47 — where does the decimal point go? (a) 89.3 (b) 893 (c) 8.93 (d) 0.893
  14. 14.0.71 × 8 — where does the decimal point go? (a) 56.8 (b) 0.0568 (c) 5.68 (d) 0.568
  15. 15.0.33 × 5 — where does the decimal point go? (a) 0.165 (b) 0.0165 (c) 16.5 (d) 1.65
  16. 16.7.7 × 2 — where does the decimal point go? (a) 1.54 (b) 0.154 (c) 15.4 (d) 154
  17. 17.0.56 × 2 — where does the decimal point go? (a) 0.112 (b) 0.0112 (c) 1.12 (d) 11.2
  18. 18.4.4 × 2 — where does the decimal point go? (a) 8.8 (b) 88 (c) 0.88 (d) 0.088
  19. 19.4.8 × 23 — where does the decimal point go? (a) 11.04 (b) 1.104 (c) 110.4 (d) 1104
  20. 20.0.98 × 8 — where does the decimal point go? (a) 7.84 (b) 0.784 (c) 78.4 (d) 0.0784
  21. 21.0.68 × 3.2 — where does the decimal point go? (a) 2.176 (b) 21.76 (c) 0.02176 (d) 0.2176
  22. 22.9.2 × 0.2 — where does the decimal point go? (a) 1.84 (b) 18.4 (c) 0.184 (d) 0.0184
  23. 23.0.14 × 1.2 — where does the decimal point go? (a) 0.0168 (b) 0.00168 (c) 0.168 (d) 1.68
  24. 24.0.64 × 1.4 — where does the decimal point go? (a) 0.00896 (b) 8.96 (c) 0.896 (d) 0.0896
  25. 25.1.8 × 37 — where does the decimal point go? (a) 0.666 (b) 66.6 (c) 666 (d) 6.66
  26. 26.0.54 × 27 — where does the decimal point go? (a) 14.58 (b) 0.1458 (c) 1.458 (d) 145.8
  27. 27.3.7 × 0.4 — where does the decimal point go? (a) 14.8 (b) 0.148 (c) 1.48 (d) 0.0148
  28. 28.7.3 × 15 — where does the decimal point go? (a) 1095 (b) 109.5 (c) 10.95 (d) 1.095
  29. 29.8.8 × 6 — where does the decimal point go? (a) 528 (b) 5.28 (c) 52.8 (d) 0.528
  30. 30.0.81 × 0.3 — where does the decimal point go? (a) 0.243 (b) 0.00243 (c) 2.43 (d) 0.0243
  31. 31.0.43 × 0.5 — where does the decimal point go? (a) 0.215 (b) 2.15 (c) 0.00215 (d) 0.0215
  32. 32.7.5 × 0.7 — where does the decimal point go? (a) 5.25 (b) 0.525 (c) 0.0525 (d) 52.5
  33. 33.4.4 × 4.4 — where does the decimal point go? (a) 19.36 (b) 0.1936 (c) 193.6 (d) 1.936
  34. 34.3.5 × 0.9 — where does the decimal point go? (a) 3.15 (b) 0.315 (c) 0.0315 (d) 31.5
  35. 35.7.2 × 0.3 — where does the decimal point go? (a) 21.6 (b) 0.0216 (c) 2.16 (d) 0.216
  36. 36.8.2 × 3.8 — where does the decimal point go? (a) 31.16 (b) 0.3116 (c) 311.6 (d) 3.116
  37. 37.7.9 × 39 — where does the decimal point go? (a) 30.81 (b) 308.1 (c) 3081 (d) 3.081
  38. 38.0.14 × 0.2 — where does the decimal point go? (a) 0.028 (b) 0.0028 (c) 0.00028 (d) 0.28
  39. 39.5.1 × 0.8 — where does the decimal point go? (a) 4.08 (b) 40.8 (c) 0.0408 (d) 0.408
  40. 40.9.1 × 3 — where does the decimal point go? (a) 2.73 (b) 273 (c) 0.273 (d) 27.3

Answer key

  1. 32.98
  2. 5.49
  3. 5.95
  4. 3.96
  5. 9.02
  6. 19.8
  7. 10.85
  8. 1.98
  9. 0.72
  10. 27.6
  11. 2.8
  12. 0.39
  13. 89.3
  14. 5.68
  15. 1.65
  16. 15.4
  17. 1.12
  18. 8.8
  19. 110.4
  20. 7.84
  21. 2.176
  22. 1.84
  23. 0.168
  24. 0.896
  25. 66.6
  26. 14.58
  27. 1.48
  28. 109.5
  29. 52.8
  30. 0.243
  31. 0.215
  32. 5.25
  33. 19.36
  34. 3.15
  35. 2.16
  36. 31.16
  37. 308.1
  38. 0.028
  39. 4.08
  40. 27.3

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