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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 716 · 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. 1.0.31 × 4 — where does the decimal point go? (a) 0.124 (b) 0.0124 (c) 12.4 (d) 1.24
  2. 2.3.6 × 4 — where does the decimal point go? (a) 0.144 (b) 144 (c) 1.44 (d) 14.4
  3. 3.8.4 × 0.7 — where does the decimal point go? (a) 0.0588 (b) 58.8 (c) 0.588 (d) 5.88
  4. 4.3.5 × 1.3 — where does the decimal point go? (a) 0.455 (b) 4.55 (c) 0.0455 (d) 45.5
  5. 5.0.82 × 4 — where does the decimal point go? (a) 32.8 (b) 0.328 (c) 3.28 (d) 0.0328
  6. 6.0.83 × 0.4 — where does the decimal point go? (a) 0.0332 (b) 0.00332 (c) 0.332 (d) 3.32
  7. 7.5.6 × 4 — where does the decimal point go? (a) 0.224 (b) 224 (c) 22.4 (d) 2.24
  8. 8.3.3 × 2 — where does the decimal point go? (a) 66 (b) 0.066 (c) 6.6 (d) 0.66
  9. 9.4.1 × 1.2 — where does the decimal point go? (a) 49.2 (b) 0.0492 (c) 0.492 (d) 4.92
  10. 10.6.7 × 7 — where does the decimal point go? (a) 4.69 (b) 46.9 (c) 0.469 (d) 469
  11. 11.7.7 × 0.6 — where does the decimal point go? (a) 46.2 (b) 4.62 (c) 0.0462 (d) 0.462
  12. 12.0.12 × 29 — where does the decimal point go? (a) 34.8 (b) 0.0348 (c) 3.48 (d) 0.348
  13. 13.0.83 × 18 — where does the decimal point go? (a) 149.4 (b) 14.94 (c) 0.1494 (d) 1.494
  14. 14.0.62 × 47 — where does the decimal point go? (a) 29.14 (b) 291.4 (c) 2.914 (d) 0.2914
  15. 15.9.9 × 0.8 — where does the decimal point go? (a) 7.92 (b) 79.2 (c) 0.792 (d) 0.0792
  16. 16.9.4 × 11 — where does the decimal point go? (a) 10.34 (b) 103.4 (c) 1.034 (d) 1034
  17. 17.1.8 × 4 — where does the decimal point go? (a) 7.2 (b) 0.72 (c) 72 (d) 0.072
  18. 18.0.71 × 22 — where does the decimal point go? (a) 1.562 (b) 15.62 (c) 156.2 (d) 0.1562
  19. 19.0.96 × 9 — where does the decimal point go? (a) 0.864 (b) 0.0864 (c) 8.64 (d) 86.4
  20. 20.0.93 × 22 — where does the decimal point go? (a) 2.046 (b) 20.46 (c) 204.6 (d) 0.2046
  21. 21.5.2 × 7 — where does the decimal point go? (a) 36.4 (b) 0.364 (c) 364 (d) 3.64
  22. 22.0.64 × 7 — where does the decimal point go? (a) 4.48 (b) 0.0448 (c) 0.448 (d) 44.8
  23. 23.4.3 × 16 — where does the decimal point go? (a) 6.88 (b) 68.8 (c) 688 (d) 0.688
  24. 24.0.54 × 0.4 — where does the decimal point go? (a) 0.00216 (b) 0.0216 (c) 0.216 (d) 2.16
  25. 25.0.38 × 8 — where does the decimal point go? (a) 0.0304 (b) 3.04 (c) 0.304 (d) 30.4
  26. 26.9.9 × 0.5 — where does the decimal point go? (a) 49.5 (b) 4.95 (c) 0.495 (d) 0.0495
  27. 27.7.3 × 2 — where does the decimal point go? (a) 14.6 (b) 146 (c) 1.46 (d) 0.146
  28. 28.7.5 × 0.5 — where does the decimal point go? (a) 0.375 (b) 3.75 (c) 0.0375 (d) 37.5
  29. 29.0.14 × 0.3 — where does the decimal point go? (a) 0.042 (b) 0.00042 (c) 0.0042 (d) 0.42
  30. 30.4.7 × 0.7 — where does the decimal point go? (a) 32.9 (b) 0.329 (c) 0.0329 (d) 3.29
  31. 31.7.1 × 0.8 — where does the decimal point go? (a) 5.68 (b) 0.0568 (c) 0.568 (d) 56.8
  32. 32.0.33 × 1.7 — where does the decimal point go? (a) 0.00561 (b) 0.561 (c) 0.0561 (d) 5.61
  33. 33.0.26 × 0.6 — where does the decimal point go? (a) 0.00156 (b) 0.0156 (c) 1.56 (d) 0.156
  34. 34.1.9 × 15 — where does the decimal point go? (a) 28.5 (b) 285 (c) 0.285 (d) 2.85
  35. 35.8.1 × 4 — where does the decimal point go? (a) 0.324 (b) 324 (c) 3.24 (d) 32.4
  36. 36.0.32 × 1.4 — where does the decimal point go? (a) 4.48 (b) 0.0448 (c) 0.448 (d) 0.00448
  37. 37.0.88 × 9 — where does the decimal point go? (a) 79.2 (b) 7.92 (c) 0.0792 (d) 0.792
  38. 38.7.6 × 0.9 — where does the decimal point go? (a) 0.684 (b) 68.4 (c) 0.0684 (d) 6.84
  39. 39.0.26 × 9 — where does the decimal point go? (a) 23.4 (b) 0.234 (c) 2.34 (d) 0.0234
  40. 40.4.8 × 6 — where does the decimal point go? (a) 0.288 (b) 288 (c) 2.88 (d) 28.8

Answer key

  1. 1.24
  2. 14.4
  3. 5.88
  4. 4.55
  5. 3.28
  6. 0.332
  7. 22.4
  8. 6.6
  9. 4.92
  10. 46.9
  11. 4.62
  12. 3.48
  13. 14.94
  14. 29.14
  15. 7.92
  16. 103.4
  17. 7.2
  18. 15.62
  19. 8.64
  20. 20.46
  21. 36.4
  22. 4.48
  23. 68.8
  24. 0.216
  25. 3.04
  26. 4.95
  27. 14.6
  28. 3.75
  29. 0.042
  30. 3.29
  31. 5.68
  32. 0.561
  33. 0.156
  34. 28.5
  35. 32.4
  36. 0.448
  37. 7.92
  38. 6.84
  39. 2.34
  40. 28.8

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