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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 428 · 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. 1.3.8 × 0.3 — where does the decimal point go? (a) 1.14 (b) 0.114 (c) 0.0114 (d) 11.4
  2. 2.0.93 × 4.9 — where does the decimal point go? (a) 0.4557 (b) 4.557 (c) 0.04557 (d) 45.57
  3. 3.0.29 × 0.5 — where does the decimal point go? (a) 1.45 (b) 0.00145 (c) 0.0145 (d) 0.145
  4. 4.0.47 × 1.1 — where does the decimal point go? (a) 5.17 (b) 0.517 (c) 0.0517 (d) 0.00517
  5. 5.4.7 × 0.4 — where does the decimal point go? (a) 1.88 (b) 0.0188 (c) 18.8 (d) 0.188
  6. 6.2.7 × 4 — where does the decimal point go? (a) 1.08 (b) 0.108 (c) 108 (d) 10.8
  7. 7.0.79 × 0.3 — where does the decimal point go? (a) 0.00237 (b) 0.0237 (c) 0.237 (d) 2.37
  8. 8.9.4 × 0.7 — where does the decimal point go? (a) 0.658 (b) 6.58 (c) 0.0658 (d) 65.8
  9. 9.0.91 × 21 — where does the decimal point go? (a) 0.1911 (b) 19.11 (c) 191.1 (d) 1.911
  10. 10.2.4 × 0.7 — where does the decimal point go? (a) 1.68 (b) 0.168 (c) 16.8 (d) 0.0168
  11. 11.0.46 × 0.3 — where does the decimal point go? (a) 0.00138 (b) 0.138 (c) 0.0138 (d) 1.38
  12. 12.3.2 × 9 — where does the decimal point go? (a) 288 (b) 28.8 (c) 0.288 (d) 2.88
  13. 13.3.4 × 9 — where does the decimal point go? (a) 306 (b) 0.306 (c) 30.6 (d) 3.06
  14. 14.0.23 × 16 — where does the decimal point go? (a) 0.368 (b) 3.68 (c) 0.0368 (d) 36.8
  15. 15.5.3 × 0.7 — where does the decimal point go? (a) 37.1 (b) 0.371 (c) 3.71 (d) 0.0371
  16. 16.0.57 × 8 — where does the decimal point go? (a) 45.6 (b) 0.0456 (c) 0.456 (d) 4.56
  17. 17.0.86 × 0.7 — where does the decimal point go? (a) 0.00602 (b) 0.602 (c) 0.0602 (d) 6.02
  18. 18.0.59 × 0.4 — where does the decimal point go? (a) 0.00236 (b) 0.0236 (c) 2.36 (d) 0.236
  19. 19.8.6 × 2 — where does the decimal point go? (a) 0.172 (b) 172 (c) 17.2 (d) 1.72
  20. 20.3.8 × 4 — where does the decimal point go? (a) 152 (b) 15.2 (c) 0.152 (d) 1.52
  21. 21.0.65 × 1.3 — where does the decimal point go? (a) 0.0845 (b) 0.845 (c) 0.00845 (d) 8.45
  22. 22.8.2 × 17 — where does the decimal point go? (a) 1.394 (b) 13.94 (c) 139.4 (d) 1394
  23. 23.0.81 × 3.7 — where does the decimal point go? (a) 2.997 (b) 29.97 (c) 0.02997 (d) 0.2997
  24. 24.8.5 × 3.9 — where does the decimal point go? (a) 0.3315 (b) 33.15 (c) 331.5 (d) 3.315
  25. 25.1.8 × 19 — where does the decimal point go? (a) 0.342 (b) 342 (c) 34.2 (d) 3.42
  26. 26.4.8 × 9 — where does the decimal point go? (a) 4.32 (b) 0.432 (c) 43.2 (d) 432
  27. 27.2.1 × 9 — where does the decimal point go? (a) 189 (b) 0.189 (c) 18.9 (d) 1.89
  28. 28.0.24 × 33 — where does the decimal point go? (a) 0.0792 (b) 0.792 (c) 79.2 (d) 7.92
  29. 29.0.84 × 0.8 — where does the decimal point go? (a) 0.672 (b) 6.72 (c) 0.0672 (d) 0.00672
  30. 30.0.21 × 0.6 — where does the decimal point go? (a) 0.126 (b) 0.0126 (c) 0.00126 (d) 1.26
  31. 31.0.35 × 0.5 — where does the decimal point go? (a) 0.00175 (b) 1.75 (c) 0.0175 (d) 0.175
  32. 32.0.82 × 1.9 — where does the decimal point go? (a) 0.1558 (b) 1.558 (c) 0.01558 (d) 15.58
  33. 33.0.81 × 1.6 — where does the decimal point go? (a) 0.1296 (b) 1.296 (c) 0.01296 (d) 12.96
  34. 34.5.6 × 1.1 — where does the decimal point go? (a) 0.0616 (b) 6.16 (c) 0.616 (d) 61.6
  35. 35.0.93 × 3 — where does the decimal point go? (a) 0.279 (b) 2.79 (c) 27.9 (d) 0.0279
  36. 36.3.9 × 5 — where does the decimal point go? (a) 0.195 (b) 19.5 (c) 195 (d) 1.95
  37. 37.5.8 × 17 — where does the decimal point go? (a) 98.6 (b) 0.986 (c) 986 (d) 9.86
  38. 38.6.9 × 1.9 — where does the decimal point go? (a) 131.1 (b) 13.11 (c) 0.1311 (d) 1.311
  39. 39.6.3 × 6 — where does the decimal point go? (a) 37.8 (b) 3.78 (c) 378 (d) 0.378
  40. 40.0.79 × 14 — where does the decimal point go? (a) 0.1106 (b) 1.106 (c) 11.06 (d) 110.6

Answer key

  1. 1.14
  2. 4.557
  3. 0.145
  4. 0.517
  5. 1.88
  6. 10.8
  7. 0.237
  8. 6.58
  9. 19.11
  10. 1.68
  11. 0.138
  12. 28.8
  13. 30.6
  14. 3.68
  15. 3.71
  16. 4.56
  17. 0.602
  18. 0.236
  19. 17.2
  20. 15.2
  21. 0.845
  22. 139.4
  23. 2.997
  24. 33.15
  25. 34.2
  26. 43.2
  27. 18.9
  28. 7.92
  29. 0.672
  30. 0.126
  31. 0.175
  32. 1.558
  33. 1.296
  34. 6.16
  35. 2.79
  36. 19.5
  37. 98.6
  38. 13.11
  39. 37.8
  40. 11.06

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