Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 360 · 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. 1.1.9 × 3.8 — where does the decimal point go? (a) 0.0722 (b) 7.22 (c) 0.722 (d) 72.2
2. 2.9.9 × 34 — where does the decimal point go? (a) 3366 (b) 33.66 (c) 3.366 (d) 336.6
3. 3.8.5 × 5 — where does the decimal point go? (a) 425 (b) 42.5 (c) 0.425 (d) 4.25
4. 4.7.2 × 2.7 — where does the decimal point go? (a) 1.944 (b) 19.44 (c) 194.4 (d) 0.1944
5. 5.5.8 × 0.9 — where does the decimal point go? (a) 0.522 (b) 0.0522 (c) 5.22 (d) 52.2
6. 6.0.59 × 8 — where does the decimal point go? (a) 4.72 (b) 0.0472 (c) 0.472 (d) 47.2
7. 7.1.2 × 3.2 — where does the decimal point go? (a) 38.4 (b) 0.0384 (c) 3.84 (d) 0.384
8. 8.4.9 × 0.9 — where does the decimal point go? (a) 4.41 (b) 0.441 (c) 0.0441 (d) 44.1
9. 9.8.4 × 3.6 — where does the decimal point go? (a) 302.4 (b) 0.3024 (c) 30.24 (d) 3.024
10. 10.0.69 × 12 — where does the decimal point go? (a) 0.828 (b) 82.8 (c) 0.0828 (d) 8.28
11. 11.0.41 × 0.6 — where does the decimal point go? (a) 0.246 (b) 0.0246 (c) 0.00246 (d) 2.46
12. 12.9.2 × 4.8 — where does the decimal point go? (a) 44.16 (b) 0.4416 (c) 441.6 (d) 4.416
13. 13.0.99 × 4.7 — where does the decimal point go? (a) 0.04653 (b) 4.653 (c) 0.4653 (d) 46.53
14. 14.0.18 × 2 — where does the decimal point go? (a) 0.0036 (b) 0.36 (c) 0.036 (d) 3.6
15. 15.3.8 × 11 — where does the decimal point go? (a) 0.418 (b) 418 (c) 4.18 (d) 41.8
16. 16.8.5 × 17 — where does the decimal point go? (a) 1445 (b) 1.445 (c) 14.45 (d) 144.5
17. 17.3.5 × 35 — where does the decimal point go? (a) 1.225 (b) 12.25 (c) 1225 (d) 122.5
18. 18.7.1 × 1.6 — where does the decimal point go? (a) 0.1136 (b) 11.36 (c) 1.136 (d) 113.6
19. 19.8.3 × 9 — where does the decimal point go? (a) 747 (b) 74.7 (c) 0.747 (d) 7.47
20. 20.9.3 × 1.3 — where does the decimal point go? (a) 120.9 (b) 1.209 (c) 12.09 (d) 0.1209
21. 21.0.19 × 2 — where does the decimal point go? (a) 0.38 (b) 0.0038 (c) 0.038 (d) 3.8
22. 22.0.27 × 0.6 — where does the decimal point go? (a) 0.162 (b) 1.62 (c) 0.00162 (d) 0.0162
23. 23.5.1 × 0.2 — where does the decimal point go? (a) 1.02 (b) 0.102 (c) 10.2 (d) 0.0102
24. 24.0.87 × 39 — where does the decimal point go? (a) 33.93 (b) 0.3393 (c) 3.393 (d) 339.3
25. 25.0.89 × 2 — where does the decimal point go? (a) 0.0178 (b) 1.78 (c) 17.8 (d) 0.178
26. 26.8.8 × 16 — where does the decimal point go? (a) 1408 (b) 14.08 (c) 1.408 (d) 140.8
27. 27.5.3 × 0.6 — where does the decimal point go? (a) 31.8 (b) 0.318 (c) 0.0318 (d) 3.18
28. 28.0.78 × 7 — where does the decimal point go? (a) 0.546 (b) 0.0546 (c) 5.46 (d) 54.6
29. 29.9.3 × 42 — where does the decimal point go? (a) 39.06 (b) 3.906 (c) 390.6 (d) 3906
30. 30.0.46 × 34 — where does the decimal point go? (a) 15.64 (b) 0.1564 (c) 156.4 (d) 1.564
31. 31.8.9 × 0.6 — where does the decimal point go? (a) 5.34 (b) 0.534 (c) 53.4 (d) 0.0534
32. 32.0.38 × 3 — where does the decimal point go? (a) 1.14 (b) 0.114 (c) 0.0114 (d) 11.4
33. 33.2.3 × 0.6 — where does the decimal point go? (a) 1.38 (b) 0.0138 (c) 13.8 (d) 0.138
34. 34.5.6 × 7 — where does the decimal point go? (a) 39.2 (b) 3.92 (c) 0.392 (d) 392
35. 35.0.43 × 0.9 — where does the decimal point go? (a) 0.0387 (b) 0.387 (c) 0.00387 (d) 3.87
36. 36.4.4 × 0.9 — where does the decimal point go? (a) 39.6 (b) 3.96 (c) 0.0396 (d) 0.396
37. 37.0.97 × 0.5 — where does the decimal point go? (a) 0.00485 (b) 0.485 (c) 0.0485 (d) 4.85
38. 38.0.59 × 27 — where does the decimal point go? (a) 159.3 (b) 1.593 (c) 15.93 (d) 0.1593
39. 39.0.43 × 26 — where does the decimal point go? (a) 0.1118 (b) 1.118 (c) 11.18 (d) 111.8
40. 40.8.7 × 0.6 — where does the decimal point go? (a) 0.522 (b) 0.0522 (c) 52.2 (d) 5.22

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