Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 786 · 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. 1.0.53 × 16 — where does the decimal point go? (a) 84.8 (b) 0.0848 (c) 0.848 (d) 8.48
2. 2.0.18 × 6 — where does the decimal point go? (a) 1.08 (b) 0.108 (c) 0.0108 (d) 10.8
3. 3.4.2 × 44 — where does the decimal point go? (a) 1.848 (b) 184.8 (c) 18.48 (d) 1848
4. 4.6.9 × 7 — where does the decimal point go? (a) 48.3 (b) 483 (c) 4.83 (d) 0.483
5. 5.0.64 × 9 — where does the decimal point go? (a) 0.576 (b) 0.0576 (c) 57.6 (d) 5.76
6. 6.3.1 × 0.2 — where does the decimal point go? (a) 0.062 (b) 0.62 (c) 6.2 (d) 0.0062
7. 7.9.7 × 24 — where does the decimal point go? (a) 2.328 (b) 23.28 (c) 2328 (d) 232.8
8. 8.7.2 × 0.3 — where does the decimal point go? (a) 21.6 (b) 0.216 (c) 2.16 (d) 0.0216
9. 9.0.25 × 31 — where does the decimal point go? (a) 0.0775 (b) 77.5 (c) 0.775 (d) 7.75
10. 10.0.58 × 32 — where does the decimal point go? (a) 18.56 (b) 1.856 (c) 0.1856 (d) 185.6
11. 11.4.8 × 6 — where does the decimal point go? (a) 2.88 (b) 288 (c) 0.288 (d) 28.8
12. 12.9.3 × 37 — where does the decimal point go? (a) 344.1 (b) 3441 (c) 34.41 (d) 3.441
13. 13.5.9 × 24 — where does the decimal point go? (a) 1416 (b) 14.16 (c) 1.416 (d) 141.6
14. 14.6.2 × 4.6 — where does the decimal point go? (a) 0.2852 (b) 2.852 (c) 285.2 (d) 28.52
15. 15.4.3 × 0.6 — where does the decimal point go? (a) 0.0258 (b) 25.8 (c) 2.58 (d) 0.258
16. 16.0.52 × 1.6 — where does the decimal point go? (a) 0.00832 (b) 0.832 (c) 8.32 (d) 0.0832
17. 17.0.88 × 0.8 — where does the decimal point go? (a) 0.0704 (b) 0.704 (c) 7.04 (d) 0.00704
18. 18.9.4 × 19 — where does the decimal point go? (a) 1786 (b) 17.86 (c) 178.6 (d) 1.786
19. 19.3.1 × 2 — where does the decimal point go? (a) 6.2 (b) 0.062 (c) 0.62 (d) 62
20. 20.0.51 × 3.4 — where does the decimal point go? (a) 0.01734 (b) 17.34 (c) 0.1734 (d) 1.734
21. 21.0.64 × 0.8 — where does the decimal point go? (a) 0.0512 (b) 5.12 (c) 0.00512 (d) 0.512
22. 22.6.8 × 4 — where does the decimal point go? (a) 272 (b) 0.272 (c) 27.2 (d) 2.72
23. 23.7.2 × 9 — where does the decimal point go? (a) 0.648 (b) 64.8 (c) 648 (d) 6.48
24. 24.7.8 × 0.4 — where does the decimal point go? (a) 0.312 (b) 31.2 (c) 3.12 (d) 0.0312
25. 25.2.9 × 0.2 — where does the decimal point go? (a) 5.8 (b) 0.58 (c) 0.0058 (d) 0.058
26. 26.0.51 × 3.6 — where does the decimal point go? (a) 0.1836 (b) 0.01836 (c) 18.36 (d) 1.836
27. 27.7.1 × 0.9 — where does the decimal point go? (a) 63.9 (b) 0.0639 (c) 6.39 (d) 0.639
28. 28.7.5 × 5 — where does the decimal point go? (a) 3.75 (b) 0.375 (c) 37.5 (d) 375
29. 29.0.91 × 1.8 — where does the decimal point go? (a) 1.638 (b) 0.01638 (c) 0.1638 (d) 16.38
30. 30.3.5 × 9 — where does the decimal point go? (a) 31.5 (b) 315 (c) 0.315 (d) 3.15
31. 31.0.48 × 0.3 — where does the decimal point go? (a) 0.0144 (b) 0.00144 (c) 1.44 (d) 0.144
32. 32.0.29 × 0.9 — where does the decimal point go? (a) 0.261 (b) 0.00261 (c) 0.0261 (d) 2.61
33. 33.0.93 × 17 — where does the decimal point go? (a) 15.81 (b) 1.581 (c) 0.1581 (d) 158.1
34. 34.0.24 × 0.3 — where does the decimal point go? (a) 0.00072 (b) 0.0072 (c) 0.072 (d) 0.72
35. 35.0.26 × 0.8 — where does the decimal point go? (a) 0.208 (b) 2.08 (c) 0.00208 (d) 0.0208
36. 36.0.97 × 0.6 — where does the decimal point go? (a) 5.82 (b) 0.00582 (c) 0.0582 (d) 0.582
37. 37.5.7 × 2 — where does the decimal point go? (a) 11.4 (b) 1.14 (c) 114 (d) 0.114
38. 38.4.8 × 4.9 — where does the decimal point go? (a) 2.352 (b) 0.2352 (c) 235.2 (d) 23.52
39. 39.1.3 × 3.9 — where does the decimal point go? (a) 5.07 (b) 0.0507 (c) 50.7 (d) 0.507
40. 40.0.58 × 39 — where does the decimal point go? (a) 0.2262 (b) 22.62 (c) 226.2 (d) 2.262

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