Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 446 · 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. 1.6.3 × 13 — where does the decimal point go? (a) 81.9 (b) 0.819 (c) 819 (d) 8.19
2. 2.3.7 × 0.9 — where does the decimal point go? (a) 3.33 (b) 0.333 (c) 0.0333 (d) 33.3
3. 3.5.5 × 21 — where does the decimal point go? (a) 11.55 (b) 1.155 (c) 1155 (d) 115.5
4. 4.0.69 × 1.2 — where does the decimal point go? (a) 8.28 (b) 0.0828 (c) 0.00828 (d) 0.828
5. 5.2.5 × 23 — where does the decimal point go? (a) 57.5 (b) 575 (c) 5.75 (d) 0.575
6. 6.0.12 × 11 — where does the decimal point go? (a) 1.32 (b) 13.2 (c) 0.0132 (d) 0.132
7. 7.9.3 × 23 — where does the decimal point go? (a) 21.39 (b) 2139 (c) 2.139 (d) 213.9
8. 8.4.3 × 0.3 — where does the decimal point go? (a) 0.129 (b) 0.0129 (c) 12.9 (d) 1.29
9. 9.0.68 × 0.8 — where does the decimal point go? (a) 0.544 (b) 0.0544 (c) 0.00544 (d) 5.44
10. 10.0.48 × 1.7 — where does the decimal point go? (a) 0.816 (b) 0.00816 (c) 0.0816 (d) 8.16
11. 11.6.7 × 0.3 — where does the decimal point go? (a) 2.01 (b) 0.0201 (c) 20.1 (d) 0.201
12. 12.6.4 × 3 — where does the decimal point go? (a) 1.92 (b) 192 (c) 19.2 (d) 0.192
13. 13.2.3 × 4 — where does the decimal point go? (a) 92 (b) 0.092 (c) 9.2 (d) 0.92
14. 14.6.6 × 3.9 — where does the decimal point go? (a) 257.4 (b) 25.74 (c) 0.2574 (d) 2.574
15. 15.8.8 × 1.1 — where does the decimal point go? (a) 0.968 (b) 9.68 (c) 0.0968 (d) 96.8
16. 16.8.7 × 0.9 — where does the decimal point go? (a) 0.783 (b) 0.0783 (c) 78.3 (d) 7.83
17. 17.0.65 × 5 — where does the decimal point go? (a) 32.5 (b) 0.0325 (c) 0.325 (d) 3.25
18. 18.1.7 × 0.3 — where does the decimal point go? (a) 0.51 (b) 0.051 (c) 0.0051 (d) 5.1
19. 19.5.8 × 8 — where does the decimal point go? (a) 0.464 (b) 4.64 (c) 46.4 (d) 464
20. 20.9.2 × 4.1 — where does the decimal point go? (a) 0.3772 (b) 3.772 (c) 377.2 (d) 37.72
21. 21.6.6 × 29 — where does the decimal point go? (a) 19.14 (b) 191.4 (c) 1.914 (d) 1914
22. 22.8.6 × 28 — where does the decimal point go? (a) 2.408 (b) 2408 (c) 24.08 (d) 240.8
23. 23.2.8 × 0.2 — where does the decimal point go? (a) 5.6 (b) 0.0056 (c) 0.56 (d) 0.056
24. 24.4.7 × 29 — where does the decimal point go? (a) 13.63 (b) 1363 (c) 1.363 (d) 136.3
25. 25.7.8 × 37 — where does the decimal point go? (a) 2886 (b) 2.886 (c) 288.6 (d) 28.86
26. 26.4.8 × 0.6 — where does the decimal point go? (a) 0.288 (b) 2.88 (c) 28.8 (d) 0.0288
27. 27.3.2 × 14 — where does the decimal point go? (a) 448 (b) 4.48 (c) 44.8 (d) 0.448
28. 28.0.67 × 0.3 — where does the decimal point go? (a) 2.01 (b) 0.00201 (c) 0.0201 (d) 0.201
29. 29.0.71 × 4.6 — where does the decimal point go? (a) 0.03266 (b) 3.266 (c) 0.3266 (d) 32.66
30. 30.1.8 × 4.6 — where does the decimal point go? (a) 8.28 (b) 0.828 (c) 82.8 (d) 0.0828
31. 31.9.3 × 0.7 — where does the decimal point go? (a) 0.651 (b) 6.51 (c) 0.0651 (d) 65.1
32. 32.0.41 × 0.2 — where does the decimal point go? (a) 0.0082 (b) 0.82 (c) 0.082 (d) 0.00082
33. 33.0.14 × 2.2 — where does the decimal point go? (a) 0.00308 (b) 0.0308 (c) 3.08 (d) 0.308
34. 34.7.4 × 0.9 — where does the decimal point go? (a) 6.66 (b) 0.0666 (c) 66.6 (d) 0.666
35. 35.6.4 × 26 — where does the decimal point go? (a) 166.4 (b) 16.64 (c) 1.664 (d) 1664
36. 36.2.4 × 4.4 — where does the decimal point go? (a) 0.1056 (b) 10.56 (c) 1.056 (d) 105.6
37. 37.4.6 × 0.2 — where does the decimal point go? (a) 0.0092 (b) 0.092 (c) 0.92 (d) 9.2
38. 38.6.6 × 3 — where does the decimal point go? (a) 19.8 (b) 198 (c) 1.98 (d) 0.198
39. 39.0.97 × 0.9 — where does the decimal point go? (a) 0.00873 (b) 8.73 (c) 0.873 (d) 0.0873
40. 40.0.39 × 16 — where does the decimal point go? (a) 62.4 (b) 0.624 (c) 0.0624 (d) 6.24

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