Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 790 · 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. 1.0.87 × 0.9 — where does the decimal point go? (a) 0.0783 (b) 0.783 (c) 7.83 (d) 0.00783
2. 2.0.54 × 0.4 — where does the decimal point go? (a) 2.16 (b) 0.00216 (c) 0.0216 (d) 0.216
3. 3.0.89 × 2.4 — where does the decimal point go? (a) 2.136 (b) 21.36 (c) 0.02136 (d) 0.2136
4. 4.3.7 × 48 — where does the decimal point go? (a) 17.76 (b) 1776 (c) 177.6 (d) 1.776
5. 5.0.84 × 24 — where does the decimal point go? (a) 2.016 (b) 20.16 (c) 0.2016 (d) 201.6
6. 6.1.8 × 8 — where does the decimal point go? (a) 0.144 (b) 144 (c) 1.44 (d) 14.4
7. 7.4.3 × 1.3 — where does the decimal point go? (a) 5.59 (b) 55.9 (c) 0.559 (d) 0.0559
8. 8.6.4 × 16 — where does the decimal point go? (a) 102.4 (b) 10.24 (c) 1024 (d) 1.024
9. 9.4.4 × 3 — where does the decimal point go? (a) 0.132 (b) 13.2 (c) 132 (d) 1.32
10. 10.8.1 × 6 — where does the decimal point go? (a) 0.486 (b) 48.6 (c) 4.86 (d) 486
11. 11.8.7 × 12 — where does the decimal point go? (a) 1.044 (b) 104.4 (c) 10.44 (d) 1044
12. 12.6.7 × 44 — where does the decimal point go? (a) 2.948 (b) 2948 (c) 294.8 (d) 29.48
13. 13.0.97 × 1.2 — where does the decimal point go? (a) 11.64 (b) 1.164 (c) 0.1164 (d) 0.01164
14. 14.0.69 × 0.3 — where does the decimal point go? (a) 0.00207 (b) 2.07 (c) 0.207 (d) 0.0207
15. 15.0.22 × 4.7 — where does the decimal point go? (a) 0.1034 (b) 0.01034 (c) 1.034 (d) 10.34
16. 16.4.9 × 2 — where does the decimal point go? (a) 0.98 (b) 9.8 (c) 98 (d) 0.098
17. 17.9.3 × 0.9 — where does the decimal point go? (a) 83.7 (b) 0.837 (c) 8.37 (d) 0.0837
18. 18.0.55 × 2.9 — where does the decimal point go? (a) 1.595 (b) 15.95 (c) 0.1595 (d) 0.01595
19. 19.3.9 × 0.6 — where does the decimal point go? (a) 2.34 (b) 23.4 (c) 0.0234 (d) 0.234
20. 20.9.6 × 44 — where does the decimal point go? (a) 4.224 (b) 422.4 (c) 4224 (d) 42.24
21. 21.0.55 × 41 — where does the decimal point go? (a) 2.255 (b) 0.2255 (c) 22.55 (d) 225.5
22. 22.5.3 × 0.6 — where does the decimal point go? (a) 31.8 (b) 0.0318 (c) 3.18 (d) 0.318
23. 23.0.99 × 9 — where does the decimal point go? (a) 8.91 (b) 0.891 (c) 0.0891 (d) 89.1
24. 24.0.46 × 21 — where does the decimal point go? (a) 0.0966 (b) 96.6 (c) 9.66 (d) 0.966
25. 25.0.69 × 0.9 — where does the decimal point go? (a) 0.00621 (b) 6.21 (c) 0.0621 (d) 0.621
26. 26.8.2 × 3.1 — where does the decimal point go? (a) 0.2542 (b) 254.2 (c) 2.542 (d) 25.42
27. 27.9.7 × 36 — where does the decimal point go? (a) 34.92 (b) 3492 (c) 3.492 (d) 349.2
28. 28.0.26 × 2 — where does the decimal point go? (a) 0.52 (b) 0.052 (c) 5.2 (d) 0.0052
29. 29.0.62 × 2.1 — where does the decimal point go? (a) 13.02 (b) 0.01302 (c) 1.302 (d) 0.1302
30. 30.0.91 × 0.6 — where does the decimal point go? (a) 0.0546 (b) 0.546 (c) 5.46 (d) 0.00546
31. 31.0.81 × 3 — where does the decimal point go? (a) 0.0243 (b) 2.43 (c) 0.243 (d) 24.3
32. 32.2.4 × 1.7 — where does the decimal point go? (a) 40.8 (b) 0.408 (c) 0.0408 (d) 4.08
33. 33.0.47 × 6 — where does the decimal point go? (a) 0.0282 (b) 0.282 (c) 28.2 (d) 2.82
34. 34.8.2 × 4.8 — where does the decimal point go? (a) 3.936 (b) 0.3936 (c) 39.36 (d) 393.6
35. 35.0.52 × 1.3 — where does the decimal point go? (a) 0.00676 (b) 0.0676 (c) 6.76 (d) 0.676
36. 36.3.1 × 1.6 — where does the decimal point go? (a) 4.96 (b) 0.496 (c) 49.6 (d) 0.0496
37. 37.2.8 × 11 — where does the decimal point go? (a) 3.08 (b) 30.8 (c) 308 (d) 0.308
38. 38.0.91 × 4 — where does the decimal point go? (a) 36.4 (b) 3.64 (c) 0.0364 (d) 0.364
39. 39.3.2 × 0.4 — where does the decimal point go? (a) 12.8 (b) 1.28 (c) 0.128 (d) 0.0128
40. 40.0.88 × 4.8 — where does the decimal point go? (a) 0.04224 (b) 0.4224 (c) 4.224 (d) 42.24

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