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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 534 · 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. 1.0.43 × 0.3 — where does the decimal point go? (a) 0.00129 (b) 1.29 (c) 0.129 (d) 0.0129
  2. 2.0.86 × 0.3 — where does the decimal point go? (a) 0.258 (b) 0.0258 (c) 0.00258 (d) 2.58
  3. 3.0.16 × 0.2 — where does the decimal point go? (a) 0.0032 (b) 0.32 (c) 0.00032 (d) 0.032
  4. 4.0.99 × 4.3 — where does the decimal point go? (a) 0.04257 (b) 42.57 (c) 0.4257 (d) 4.257
  5. 5.0.41 × 8 — where does the decimal point go? (a) 3.28 (b) 0.0328 (c) 32.8 (d) 0.328
  6. 6.6.2 × 14 — where does the decimal point go? (a) 8.68 (b) 86.8 (c) 0.868 (d) 868
  7. 7.0.79 × 0.6 — where does the decimal point go? (a) 0.0474 (b) 0.474 (c) 0.00474 (d) 4.74
  8. 8.0.83 × 0.9 — where does the decimal point go? (a) 0.0747 (b) 7.47 (c) 0.747 (d) 0.00747
  9. 9.0.74 × 4.4 — where does the decimal point go? (a) 3.256 (b) 0.3256 (c) 32.56 (d) 0.03256
  10. 10.0.34 × 0.4 — where does the decimal point go? (a) 0.136 (b) 0.0136 (c) 0.00136 (d) 1.36
  11. 11.0.79 × 2 — where does the decimal point go? (a) 0.0158 (b) 1.58 (c) 15.8 (d) 0.158
  12. 12.2.2 × 1.4 — where does the decimal point go? (a) 0.0308 (b) 30.8 (c) 3.08 (d) 0.308
  13. 13.9.4 × 3.6 — where does the decimal point go? (a) 3.384 (b) 0.3384 (c) 33.84 (d) 338.4
  14. 14.0.16 × 2 — where does the decimal point go? (a) 0.032 (b) 0.0032 (c) 0.32 (d) 3.2
  15. 15.0.47 × 5 — where does the decimal point go? (a) 0.235 (b) 0.0235 (c) 23.5 (d) 2.35
  16. 16.5.7 × 9 — where does the decimal point go? (a) 513 (b) 51.3 (c) 5.13 (d) 0.513
  17. 17.1.8 × 3.4 — where does the decimal point go? (a) 61.2 (b) 6.12 (c) 0.612 (d) 0.0612
  18. 18.0.26 × 0.9 — where does the decimal point go? (a) 0.234 (b) 0.0234 (c) 0.00234 (d) 2.34
  19. 19.0.92 × 0.4 — where does the decimal point go? (a) 0.0368 (b) 0.00368 (c) 3.68 (d) 0.368
  20. 20.7.9 × 7 — where does the decimal point go? (a) 55.3 (b) 553 (c) 5.53 (d) 0.553
  21. 21.0.59 × 2.1 — where does the decimal point go? (a) 0.1239 (b) 1.239 (c) 0.01239 (d) 12.39
  22. 22.1.5 × 3 — where does the decimal point go? (a) 4.5 (b) 45 (c) 0.045 (d) 0.45
  23. 23.0.16 × 4.4 — where does the decimal point go? (a) 0.0704 (b) 0.00704 (c) 0.704 (d) 7.04
  24. 24.4.4 × 0.8 — where does the decimal point go? (a) 0.0352 (b) 35.2 (c) 0.352 (d) 3.52
  25. 25.0.84 × 3.2 — where does the decimal point go? (a) 0.2688 (b) 26.88 (c) 0.02688 (d) 2.688
  26. 26.5.4 × 8 — where does the decimal point go? (a) 4.32 (b) 432 (c) 43.2 (d) 0.432
  27. 27.5.8 × 0.9 — where does the decimal point go? (a) 5.22 (b) 52.2 (c) 0.522 (d) 0.0522
  28. 28.9.5 × 3 — where does the decimal point go? (a) 2.85 (b) 285 (c) 28.5 (d) 0.285
  29. 29.6.6 × 3.3 — where does the decimal point go? (a) 2.178 (b) 21.78 (c) 0.2178 (d) 217.8
  30. 30.0.98 × 4.4 — where does the decimal point go? (a) 4.312 (b) 43.12 (c) 0.4312 (d) 0.04312
  31. 31.6.1 × 2 — where does the decimal point go? (a) 1.22 (b) 122 (c) 0.122 (d) 12.2
  32. 32.0.14 × 2 — where does the decimal point go? (a) 0.28 (b) 2.8 (c) 0.0028 (d) 0.028
  33. 33.4.6 × 9 — where does the decimal point go? (a) 414 (b) 4.14 (c) 41.4 (d) 0.414
  34. 34.7.9 × 3.8 — where does the decimal point go? (a) 300.2 (b) 30.02 (c) 0.3002 (d) 3.002
  35. 35.0.24 × 1.6 — where does the decimal point go? (a) 0.00384 (b) 0.0384 (c) 3.84 (d) 0.384
  36. 36.0.49 × 23 — where does the decimal point go? (a) 112.7 (b) 0.1127 (c) 1.127 (d) 11.27
  37. 37.0.92 × 12 — where does the decimal point go? (a) 11.04 (b) 0.1104 (c) 110.4 (d) 1.104
  38. 38.9.2 × 2 — where does the decimal point go? (a) 1.84 (b) 184 (c) 18.4 (d) 0.184
  39. 39.0.63 × 0.4 — where does the decimal point go? (a) 0.00252 (b) 0.252 (c) 0.0252 (d) 2.52
  40. 40.0.81 × 18 — where does the decimal point go? (a) 14.58 (b) 1.458 (c) 0.1458 (d) 145.8

Answer key

  1. 0.129
  2. 0.258
  3. 0.032
  4. 4.257
  5. 3.28
  6. 86.8
  7. 0.474
  8. 0.747
  9. 3.256
  10. 0.136
  11. 1.58
  12. 3.08
  13. 33.84
  14. 0.32
  15. 2.35
  16. 51.3
  17. 6.12
  18. 0.234
  19. 0.368
  20. 55.3
  21. 1.239
  22. 4.5
  23. 0.704
  24. 3.52
  25. 2.688
  26. 43.2
  27. 5.22
  28. 28.5
  29. 21.78
  30. 4.312
  31. 12.2
  32. 0.28
  33. 41.4
  34. 30.02
  35. 0.384
  36. 11.27
  37. 11.04
  38. 18.4
  39. 0.252
  40. 14.58

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