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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 426 · 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. 1.0.49 × 3 — where does the decimal point go? (a) 0.147 (b) 0.0147 (c) 1.47 (d) 14.7
  2. 2.0.76 × 0.3 — where does the decimal point go? (a) 0.228 (b) 0.0228 (c) 2.28 (d) 0.00228
  3. 3.6.5 × 7 — where does the decimal point go? (a) 455 (b) 4.55 (c) 45.5 (d) 0.455
  4. 4.8.3 × 19 — where does the decimal point go? (a) 157.7 (b) 1577 (c) 1.577 (d) 15.77
  5. 5.0.96 × 2.4 — where does the decimal point go? (a) 0.02304 (b) 2.304 (c) 0.2304 (d) 23.04
  6. 6.0.24 × 1.8 — where does the decimal point go? (a) 0.432 (b) 0.00432 (c) 0.0432 (d) 4.32
  7. 7.1.4 × 7 — where does the decimal point go? (a) 9.8 (b) 0.098 (c) 98 (d) 0.98
  8. 8.0.71 × 6 — where does the decimal point go? (a) 4.26 (b) 0.0426 (c) 42.6 (d) 0.426
  9. 9.3.3 × 15 — where does the decimal point go? (a) 49.5 (b) 4.95 (c) 495 (d) 0.495
  10. 10.5.6 × 31 — where does the decimal point go? (a) 173.6 (b) 1.736 (c) 17.36 (d) 1736
  11. 11.3.1 × 0.5 — where does the decimal point go? (a) 1.55 (b) 0.0155 (c) 15.5 (d) 0.155
  12. 12.1.9 × 0.7 — where does the decimal point go? (a) 0.133 (b) 1.33 (c) 13.3 (d) 0.0133
  13. 13.0.53 × 45 — where does the decimal point go? (a) 2.385 (b) 0.2385 (c) 23.85 (d) 238.5
  14. 14.4.4 × 0.2 — where does the decimal point go? (a) 0.088 (b) 8.8 (c) 0.88 (d) 0.0088
  15. 15.0.99 × 12 — where does the decimal point go? (a) 11.88 (b) 0.1188 (c) 1.188 (d) 118.8
  16. 16.6.4 × 9 — where does the decimal point go? (a) 57.6 (b) 576 (c) 5.76 (d) 0.576
  17. 17.8.3 × 4 — where does the decimal point go? (a) 332 (b) 3.32 (c) 33.2 (d) 0.332
  18. 18.8.1 × 0.3 — where does the decimal point go? (a) 0.243 (b) 2.43 (c) 0.0243 (d) 24.3
  19. 19.0.26 × 0.6 — where does the decimal point go? (a) 0.0156 (b) 1.56 (c) 0.00156 (d) 0.156
  20. 20.9.7 × 8 — where does the decimal point go? (a) 776 (b) 77.6 (c) 0.776 (d) 7.76
  21. 21.7.2 × 4 — where does the decimal point go? (a) 0.288 (b) 2.88 (c) 288 (d) 28.8
  22. 22.0.33 × 16 — where does the decimal point go? (a) 0.528 (b) 52.8 (c) 5.28 (d) 0.0528
  23. 23.7.4 × 31 — where does the decimal point go? (a) 2.294 (b) 229.4 (c) 22.94 (d) 2294
  24. 24.1.8 × 33 — where does the decimal point go? (a) 5.94 (b) 59.4 (c) 0.594 (d) 594
  25. 25.2.6 × 0.3 — where does the decimal point go? (a) 0.078 (b) 0.0078 (c) 0.78 (d) 7.8
  26. 26.0.31 × 0.9 — where does the decimal point go? (a) 0.0279 (b) 2.79 (c) 0.279 (d) 0.00279
  27. 27.8.7 × 7 — where does the decimal point go? (a) 6.09 (b) 0.609 (c) 609 (d) 60.9
  28. 28.2.2 × 19 — where does the decimal point go? (a) 4.18 (b) 418 (c) 41.8 (d) 0.418
  29. 29.7.8 × 16 — where does the decimal point go? (a) 1.248 (b) 12.48 (c) 124.8 (d) 1248
  30. 30.8.2 × 3 — where does the decimal point go? (a) 24.6 (b) 2.46 (c) 0.246 (d) 246
  31. 31.0.33 × 6 — where does the decimal point go? (a) 0.0198 (b) 19.8 (c) 0.198 (d) 1.98
  32. 32.8.8 × 9 — where does the decimal point go? (a) 7.92 (b) 792 (c) 79.2 (d) 0.792
  33. 33.0.16 × 44 — where does the decimal point go? (a) 7.04 (b) 0.704 (c) 0.0704 (d) 70.4
  34. 34.5.7 × 0.6 — where does the decimal point go? (a) 0.342 (b) 0.0342 (c) 34.2 (d) 3.42
  35. 35.8.1 × 45 — where does the decimal point go? (a) 3.645 (b) 364.5 (c) 36.45 (d) 3645
  36. 36.0.56 × 0.2 — where does the decimal point go? (a) 0.112 (b) 0.0112 (c) 1.12 (d) 0.00112
  37. 37.9.1 × 9 — where does the decimal point go? (a) 81.9 (b) 8.19 (c) 819 (d) 0.819
  38. 38.6.3 × 4.8 — where does the decimal point go? (a) 0.3024 (b) 30.24 (c) 302.4 (d) 3.024
  39. 39.0.34 × 3.4 — where does the decimal point go? (a) 0.1156 (b) 0.01156 (c) 1.156 (d) 11.56
  40. 40.0.72 × 2.8 — where does the decimal point go? (a) 20.16 (b) 2.016 (c) 0.02016 (d) 0.2016

Answer key

  1. 1.47
  2. 0.228
  3. 45.5
  4. 157.7
  5. 2.304
  6. 0.432
  7. 9.8
  8. 4.26
  9. 49.5
  10. 173.6
  11. 1.55
  12. 1.33
  13. 23.85
  14. 0.88
  15. 11.88
  16. 57.6
  17. 33.2
  18. 2.43
  19. 0.156
  20. 77.6
  21. 28.8
  22. 5.28
  23. 229.4
  24. 59.4
  25. 0.78
  26. 0.279
  27. 60.9
  28. 41.8
  29. 124.8
  30. 24.6
  31. 1.98
  32. 79.2
  33. 7.04
  34. 3.42
  35. 364.5
  36. 0.112
  37. 81.9
  38. 30.24
  39. 1.156
  40. 2.016

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