Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 160 · 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. 1.7.2 × 9 — where does the decimal point go? (a) 6.48 (b) 64.8 (c) 648 (d) 0.648
2. 2.0.63 × 0.5 — where does the decimal point go? (a) 0.00315 (b) 0.315 (c) 0.0315 (d) 3.15
3. 3.9.4 × 36 — where does the decimal point go? (a) 33.84 (b) 3.384 (c) 338.4 (d) 3384
4. 4.4.2 × 0.3 — where does the decimal point go? (a) 1.26 (b) 12.6 (c) 0.126 (d) 0.0126
5. 5.5.4 × 18 — where does the decimal point go? (a) 0.972 (b) 97.2 (c) 9.72 (d) 972
6. 6.3.6 × 0.3 — where does the decimal point go? (a) 1.08 (b) 0.0108 (c) 10.8 (d) 0.108
7. 7.0.46 × 42 — where does the decimal point go? (a) 193.2 (b) 19.32 (c) 0.1932 (d) 1.932
8. 8.0.93 × 4.6 — where does the decimal point go? (a) 0.04278 (b) 0.4278 (c) 42.78 (d) 4.278
9. 9.0.17 × 29 — where does the decimal point go? (a) 4.93 (b) 0.493 (c) 49.3 (d) 0.0493
10. 10.0.22 × 3 — where does the decimal point go? (a) 0.066 (b) 0.66 (c) 6.6 (d) 0.0066
11. 11.0.27 × 5 — where does the decimal point go? (a) 0.135 (b) 0.0135 (c) 13.5 (d) 1.35
12. 12.2.2 × 9 — where does the decimal point go? (a) 198 (b) 0.198 (c) 19.8 (d) 1.98
13. 13.6.1 × 43 — where does the decimal point go? (a) 2.623 (b) 26.23 (c) 262.3 (d) 2623
14. 14.0.26 × 6 — where does the decimal point go? (a) 1.56 (b) 15.6 (c) 0.0156 (d) 0.156
15. 15.2.6 × 0.6 — where does the decimal point go? (a) 0.156 (b) 15.6 (c) 1.56 (d) 0.0156
16. 16.7.3 × 13 — where does the decimal point go? (a) 0.949 (b) 949 (c) 9.49 (d) 94.9
17. 17.3.8 × 0.4 — where does the decimal point go? (a) 1.52 (b) 15.2 (c) 0.0152 (d) 0.152
18. 18.0.77 × 7 — where does the decimal point go? (a) 53.9 (b) 5.39 (c) 0.0539 (d) 0.539
19. 19.5.7 × 8 — where does the decimal point go? (a) 0.456 (b) 4.56 (c) 456 (d) 45.6
20. 20.3.3 × 5 — where does the decimal point go? (a) 0.165 (b) 16.5 (c) 1.65 (d) 165
21. 21.0.69 × 4 — where does the decimal point go? (a) 2.76 (b) 27.6 (c) 0.276 (d) 0.0276
22. 22.9.4 × 8 — where does the decimal point go? (a) 75.2 (b) 0.752 (c) 7.52 (d) 752
23. 23.0.49 × 0.9 — where does the decimal point go? (a) 0.00441 (b) 0.0441 (c) 0.441 (d) 4.41
24. 24.5.6 × 27 — where does the decimal point go? (a) 151.2 (b) 15.12 (c) 1.512 (d) 1512
25. 25.8.7 × 12 — where does the decimal point go? (a) 1.044 (b) 104.4 (c) 1044 (d) 10.44
26. 26.0.49 × 17 — where does the decimal point go? (a) 8.33 (b) 0.833 (c) 83.3 (d) 0.0833
27. 27.0.46 × 8 — where does the decimal point go? (a) 36.8 (b) 0.0368 (c) 3.68 (d) 0.368
28. 28.0.14 × 0.3 — where does the decimal point go? (a) 0.042 (b) 0.00042 (c) 0.42 (d) 0.0042
29. 29.6.1 × 2 — where does the decimal point go? (a) 122 (b) 12.2 (c) 0.122 (d) 1.22
30. 30.0.89 × 48 — where does the decimal point go? (a) 0.4272 (b) 427.2 (c) 42.72 (d) 4.272
31. 31.1.3 × 7 — where does the decimal point go? (a) 0.091 (b) 9.1 (c) 91 (d) 0.91
32. 32.0.82 × 4 — where does the decimal point go? (a) 32.8 (b) 3.28 (c) 0.328 (d) 0.0328
33. 33.0.47 × 0.2 — where does the decimal point go? (a) 0.094 (b) 0.94 (c) 0.0094 (d) 0.00094
34. 34.7.4 × 0.3 — where does the decimal point go? (a) 2.22 (b) 0.0222 (c) 22.2 (d) 0.222
35. 35.5.6 × 28 — where does the decimal point go? (a) 1568 (b) 15.68 (c) 156.8 (d) 1.568
36. 36.3.8 × 18 — where does the decimal point go? (a) 0.684 (b) 68.4 (c) 684 (d) 6.84
37. 37.5.5 × 29 — where does the decimal point go? (a) 1595 (b) 15.95 (c) 159.5 (d) 1.595
38. 38.2.3 × 17 — where does the decimal point go? (a) 391 (b) 39.1 (c) 0.391 (d) 3.91
39. 39.0.45 × 0.3 — where does the decimal point go? (a) 0.0135 (b) 0.135 (c) 0.00135 (d) 1.35
40. 40.6.5 × 0.3 — where does the decimal point go? (a) 0.195 (b) 0.0195 (c) 1.95 (d) 19.5

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