Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 162 · 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. 1.0.51 × 0.4 — where does the decimal point go? (a) 0.00204 (b) 0.0204 (c) 2.04 (d) 0.204
2. 2.1.8 × 44 — where does the decimal point go? (a) 7.92 (b) 79.2 (c) 0.792 (d) 792
3. 3.4.8 × 0.8 — where does the decimal point go? (a) 38.4 (b) 3.84 (c) 0.384 (d) 0.0384
4. 4.5.1 × 45 — where does the decimal point go? (a) 2295 (b) 229.5 (c) 2.295 (d) 22.95
5. 5.0.61 × 3.4 — where does the decimal point go? (a) 0.2074 (b) 20.74 (c) 0.02074 (d) 2.074
6. 6.0.56 × 0.8 — where does the decimal point go? (a) 0.0448 (b) 4.48 (c) 0.00448 (d) 0.448
7. 7.0.17 × 3 — where does the decimal point go? (a) 0.51 (b) 0.0051 (c) 0.051 (d) 5.1
8. 8.0.82 × 0.7 — where does the decimal point go? (a) 0.0574 (b) 5.74 (c) 0.00574 (d) 0.574
9. 9.1.3 × 7 — where does the decimal point go? (a) 0.91 (b) 0.091 (c) 9.1 (d) 91
10. 10.2.2 × 8 — where does the decimal point go? (a) 1.76 (b) 0.176 (c) 17.6 (d) 176
11. 11.8.2 × 4.1 — where does the decimal point go? (a) 0.3362 (b) 3.362 (c) 33.62 (d) 336.2
12. 12.0.13 × 8 — where does the decimal point go? (a) 0.0104 (b) 0.104 (c) 10.4 (d) 1.04
13. 13.7.6 × 0.8 — where does the decimal point go? (a) 0.0608 (b) 6.08 (c) 0.608 (d) 60.8
14. 14.9.4 × 1.8 — where does the decimal point go? (a) 16.92 (b) 0.1692 (c) 1.692 (d) 169.2
15. 15.0.69 × 49 — where does the decimal point go? (a) 3.381 (b) 338.1 (c) 33.81 (d) 0.3381
16. 16.7.2 × 3.2 — where does the decimal point go? (a) 0.2304 (b) 23.04 (c) 230.4 (d) 2.304
17. 17.3.1 × 44 — where does the decimal point go? (a) 1364 (b) 136.4 (c) 13.64 (d) 1.364
18. 18.9.1 × 7 — where does the decimal point go? (a) 637 (b) 0.637 (c) 63.7 (d) 6.37
19. 19.0.65 × 2.7 — where does the decimal point go? (a) 0.1755 (b) 1.755 (c) 0.01755 (d) 17.55
20. 20.3.1 × 0.4 — where does the decimal point go? (a) 12.4 (b) 0.124 (c) 0.0124 (d) 1.24
21. 21.7.8 × 28 — where does the decimal point go? (a) 2184 (b) 21.84 (c) 218.4 (d) 2.184
22. 22.7.9 × 7 — where does the decimal point go? (a) 553 (b) 55.3 (c) 0.553 (d) 5.53
23. 23.7.1 × 3.6 — where does the decimal point go? (a) 0.2556 (b) 255.6 (c) 25.56 (d) 2.556
24. 24.0.43 × 0.8 — where does the decimal point go? (a) 0.0344 (b) 0.00344 (c) 0.344 (d) 3.44
25. 25.0.48 × 3 — where does the decimal point go? (a) 0.0144 (b) 0.144 (c) 14.4 (d) 1.44
26. 26.4.1 × 27 — where does the decimal point go? (a) 1107 (b) 110.7 (c) 1.107 (d) 11.07
27. 27.0.14 × 7 — where does the decimal point go? (a) 0.0098 (b) 0.098 (c) 9.8 (d) 0.98
28. 28.2.1 × 4 — where does the decimal point go? (a) 8.4 (b) 0.84 (c) 0.084 (d) 84
29. 29.7.7 × 3.4 — where does the decimal point go? (a) 261.8 (b) 26.18 (c) 0.2618 (d) 2.618
30. 30.9.3 × 6 — where does the decimal point go? (a) 0.558 (b) 558 (c) 55.8 (d) 5.58
31. 31.1.9 × 9 — where does the decimal point go? (a) 1.71 (b) 171 (c) 17.1 (d) 0.171
32. 32.0.66 × 4 — where does the decimal point go? (a) 0.0264 (b) 26.4 (c) 2.64 (d) 0.264
33. 33.5.8 × 23 — where does the decimal point go? (a) 133.4 (b) 13.34 (c) 1.334 (d) 1334
34. 34.0.26 × 4 — where does the decimal point go? (a) 0.104 (b) 0.0104 (c) 1.04 (d) 10.4
35. 35.9.2 × 0.2 — where does the decimal point go? (a) 1.84 (b) 0.0184 (c) 0.184 (d) 18.4
36. 36.3.3 × 0.3 — where does the decimal point go? (a) 0.099 (b) 9.9 (c) 0.0099 (d) 0.99
37. 37.0.53 × 0.8 — where does the decimal point go? (a) 0.0424 (b) 0.424 (c) 4.24 (d) 0.00424
38. 38.2.9 × 3.9 — where does the decimal point go? (a) 113.1 (b) 0.1131 (c) 11.31 (d) 1.131
39. 39.6.6 × 1.2 — where does the decimal point go? (a) 0.0792 (b) 79.2 (c) 0.792 (d) 7.92
40. 40.1.8 × 4.7 — where does the decimal point go? (a) 0.846 (b) 84.6 (c) 8.46 (d) 0.0846

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