Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 362 · 40 questions

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.

1. 1.0.22 × 6 — where does the decimal point go? (a) 13.2 (b) 1.32 (c) 0.0132 (d) 0.132
2. 2.6.2 × 4.4 — where does the decimal point go? (a) 2.728 (b) 0.2728 (c) 272.8 (d) 27.28
3. 3.0.19 × 12 — where does the decimal point go? (a) 0.0228 (b) 2.28 (c) 0.228 (d) 22.8
4. 4.5.6 × 2.1 — where does the decimal point go? (a) 117.6 (b) 1.176 (c) 0.1176 (d) 11.76
5. 5.4.7 × 29 — where does the decimal point go? (a) 13.63 (b) 1363 (c) 136.3 (d) 1.363
6. 6.3.8 × 43 — where does the decimal point go? (a) 1634 (b) 163.4 (c) 1.634 (d) 16.34
7. 7.1.6 × 0.9 — where does the decimal point go? (a) 0.144 (b) 0.0144 (c) 1.44 (d) 14.4
8. 8.0.26 × 9 — where does the decimal point go? (a) 2.34 (b) 23.4 (c) 0.0234 (d) 0.234
9. 9.3.3 × 2.2 — where does the decimal point go? (a) 0.726 (b) 72.6 (c) 0.0726 (d) 7.26
10. 10.0.14 × 17 — where does the decimal point go? (a) 0.238 (b) 2.38 (c) 0.0238 (d) 23.8
11. 11.9.5 × 3 — where does the decimal point go? (a) 285 (b) 28.5 (c) 2.85 (d) 0.285
12. 12.3.9 × 0.7 — where does the decimal point go? (a) 27.3 (b) 0.273 (c) 2.73 (d) 0.0273
13. 13.7.9 × 37 — where does the decimal point go? (a) 2923 (b) 292.3 (c) 2.923 (d) 29.23
14. 14.7.5 × 0.5 — where does the decimal point go? (a) 0.0375 (b) 37.5 (c) 0.375 (d) 3.75
15. 15.0.81 × 23 — where does the decimal point go? (a) 1.863 (b) 18.63 (c) 186.3 (d) 0.1863
16. 16.3.7 × 38 — where does the decimal point go? (a) 140.6 (b) 1406 (c) 14.06 (d) 1.406
17. 17.6.1 × 4 — where does the decimal point go? (a) 2.44 (b) 0.244 (c) 244 (d) 24.4
18. 18.0.81 × 9 — where does the decimal point go? (a) 72.9 (b) 7.29 (c) 0.729 (d) 0.0729
19. 19.0.78 × 23 — where does the decimal point go? (a) 1.794 (b) 179.4 (c) 17.94 (d) 0.1794
20. 20.0.78 × 0.7 — where does the decimal point go? (a) 5.46 (b) 0.546 (c) 0.0546 (d) 0.00546
21. 21.0.73 × 2 — where does the decimal point go? (a) 14.6 (b) 0.0146 (c) 1.46 (d) 0.146
22. 22.0.51 × 4.8 — where does the decimal point go? (a) 2.448 (b) 24.48 (c) 0.02448 (d) 0.2448
23. 23.4.7 × 3.9 — where does the decimal point go? (a) 18.33 (b) 183.3 (c) 1.833 (d) 0.1833
24. 24.5.2 × 7 — where does the decimal point go? (a) 0.364 (b) 3.64 (c) 36.4 (d) 364
25. 25.0.45 × 3 — where does the decimal point go? (a) 0.135 (b) 13.5 (c) 1.35 (d) 0.0135
26. 26.5.6 × 49 — where does the decimal point go? (a) 2744 (b) 274.4 (c) 2.744 (d) 27.44
27. 27.3.6 × 43 — where does the decimal point go? (a) 154.8 (b) 15.48 (c) 1548 (d) 1.548
28. 28.2.7 × 0.8 — where does the decimal point go? (a) 0.0216 (b) 21.6 (c) 2.16 (d) 0.216
29. 29.3.8 × 16 — where does the decimal point go? (a) 0.608 (b) 608 (c) 60.8 (d) 6.08
30. 30.1.9 × 28 — where does the decimal point go? (a) 5.32 (b) 53.2 (c) 0.532 (d) 532
31. 31.3.8 × 4.6 — where does the decimal point go? (a) 0.1748 (b) 1.748 (c) 174.8 (d) 17.48
32. 32.0.37 × 3 — where does the decimal point go? (a) 1.11 (b) 11.1 (c) 0.0111 (d) 0.111
33. 33.9.8 × 36 — where does the decimal point go? (a) 3528 (b) 35.28 (c) 352.8 (d) 3.528
34. 34.0.34 × 18 — where does the decimal point go? (a) 0.0612 (b) 61.2 (c) 0.612 (d) 6.12
35. 35.6.4 × 13 — where does the decimal point go? (a) 8.32 (b) 0.832 (c) 83.2 (d) 832
36. 36.2.9 × 4.4 — where does the decimal point go? (a) 0.1276 (b) 1.276 (c) 12.76 (d) 127.6
37. 37.8.5 × 31 — where does the decimal point go? (a) 2635 (b) 26.35 (c) 263.5 (d) 2.635
38. 38.1.8 × 0.6 — where does the decimal point go? (a) 10.8 (b) 0.0108 (c) 0.108 (d) 1.08
39. 39.0.49 × 9 — where does the decimal point go? (a) 44.1 (b) 0.441 (c) 0.0441 (d) 4.41
40. 40.0.98 × 0.4 — where does the decimal point go? (a) 0.0392 (b) 0.392 (c) 3.92 (d) 0.00392

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