Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 822 · 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. 1.0.81 × 32 — where does the decimal point go? (a) 25.92 (b) 259.2 (c) 0.2592 (d) 2.592
2. 2.8.1 × 13 — where does the decimal point go? (a) 105.3 (b) 10.53 (c) 1.053 (d) 1053
3. 3.0.48 × 1.1 — where does the decimal point go? (a) 5.28 (b) 0.528 (c) 0.00528 (d) 0.0528
4. 4.0.34 × 3.3 — where does the decimal point go? (a) 1.122 (b) 0.01122 (c) 11.22 (d) 0.1122
5. 5.8.3 × 2 — where does the decimal point go? (a) 1.66 (b) 166 (c) 16.6 (d) 0.166
6. 6.0.43 × 13 — where does the decimal point go? (a) 5.59 (b) 0.559 (c) 55.9 (d) 0.0559
7. 7.6.8 × 12 — where does the decimal point go? (a) 0.816 (b) 81.6 (c) 8.16 (d) 816
8. 8.0.36 × 18 — where does the decimal point go? (a) 0.648 (b) 6.48 (c) 64.8 (d) 0.0648
9. 9.0.58 × 8 — where does the decimal point go? (a) 4.64 (b) 0.464 (c) 46.4 (d) 0.0464
10. 10.5.7 × 4 — where does the decimal point go? (a) 2.28 (b) 22.8 (c) 0.228 (d) 228
11. 11.6.2 × 4.9 — where does the decimal point go? (a) 0.3038 (b) 303.8 (c) 30.38 (d) 3.038
12. 12.3.6 × 6 — where does the decimal point go? (a) 216 (b) 0.216 (c) 21.6 (d) 2.16
13. 13.8.1 × 0.2 — where does the decimal point go? (a) 16.2 (b) 1.62 (c) 0.0162 (d) 0.162
14. 14.4.2 × 1.1 — where does the decimal point go? (a) 0.0462 (b) 4.62 (c) 0.462 (d) 46.2
15. 15.9.7 × 4 — where does the decimal point go? (a) 388 (b) 0.388 (c) 3.88 (d) 38.8
16. 16.7.7 × 0.7 — where does the decimal point go? (a) 0.539 (b) 0.0539 (c) 5.39 (d) 53.9
17. 17.0.28 × 0.3 — where does the decimal point go? (a) 0.084 (b) 0.00084 (c) 0.0084 (d) 0.84
18. 18.0.32 × 3.3 — where does the decimal point go? (a) 0.01056 (b) 0.1056 (c) 10.56 (d) 1.056
19. 19.8.2 × 4 — where does the decimal point go? (a) 0.328 (b) 3.28 (c) 32.8 (d) 328
20. 20.0.47 × 27 — where does the decimal point go? (a) 0.1269 (b) 126.9 (c) 1.269 (d) 12.69
21. 21.0.37 × 47 — where does the decimal point go? (a) 0.1739 (b) 173.9 (c) 1.739 (d) 17.39
22. 22.1.9 × 0.7 — where does the decimal point go? (a) 0.0133 (b) 13.3 (c) 1.33 (d) 0.133
23. 23.5.9 × 24 — where does the decimal point go? (a) 141.6 (b) 14.16 (c) 1.416 (d) 1416
24. 24.0.16 × 0.7 — where does the decimal point go? (a) 0.112 (b) 0.0112 (c) 0.00112 (d) 1.12
25. 25.0.49 × 5 — where does the decimal point go? (a) 2.45 (b) 24.5 (c) 0.245 (d) 0.0245
26. 26.0.26 × 9 — where does the decimal point go? (a) 2.34 (b) 0.234 (c) 23.4 (d) 0.0234
27. 27.0.25 × 15 — where does the decimal point go? (a) 37.5 (b) 3.75 (c) 0.0375 (d) 0.375
28. 28.0.57 × 1.6 — where does the decimal point go? (a) 0.00912 (b) 0.0912 (c) 0.912 (d) 9.12
29. 29.0.33 × 2.3 — where does the decimal point go? (a) 0.759 (b) 0.0759 (c) 7.59 (d) 0.00759
30. 30.3.1 × 4.7 — where does the decimal point go? (a) 0.1457 (b) 145.7 (c) 14.57 (d) 1.457
31. 31.0.43 × 2.5 — where does the decimal point go? (a) 1.075 (b) 0.1075 (c) 0.01075 (d) 10.75
32. 32.7.8 × 31 — where does the decimal point go? (a) 24.18 (b) 2418 (c) 2.418 (d) 241.8
33. 33.7.4 × 0.2 — where does the decimal point go? (a) 0.148 (b) 14.8 (c) 0.0148 (d) 1.48
34. 34.0.13 × 38 — where does the decimal point go? (a) 0.0494 (b) 0.494 (c) 49.4 (d) 4.94
35. 35.0.81 × 2 — where does the decimal point go? (a) 0.162 (b) 1.62 (c) 0.0162 (d) 16.2
36. 36.0.86 × 31 — where does the decimal point go? (a) 2.666 (b) 266.6 (c) 0.2666 (d) 26.66
37. 37.0.38 × 0.3 — where does the decimal point go? (a) 0.0114 (b) 1.14 (c) 0.00114 (d) 0.114
38. 38.0.96 × 2.8 — where does the decimal point go? (a) 2.688 (b) 0.2688 (c) 26.88 (d) 0.02688
39. 39.2.4 × 0.6 — where does the decimal point go? (a) 1.44 (b) 0.0144 (c) 14.4 (d) 0.144
40. 40.9.3 × 0.8 — where does the decimal point go? (a) 0.744 (b) 74.4 (c) 7.44 (d) 0.0744

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