Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 336 · 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. 1.0.28 × 12 — where does the decimal point go? (a) 0.336 (b) 0.0336 (c) 33.6 (d) 3.36
2. 2.7.2 × 28 — where does the decimal point go? (a) 201.6 (b) 2016 (c) 2.016 (d) 20.16
3. 3.0.89 × 12 — where does the decimal point go? (a) 10.68 (b) 1.068 (c) 106.8 (d) 0.1068
4. 4.0.49 × 0.6 — where does the decimal point go? (a) 0.00294 (b) 0.294 (c) 0.0294 (d) 2.94
5. 5.0.73 × 34 — where does the decimal point go? (a) 0.2482 (b) 24.82 (c) 2.482 (d) 248.2
6. 6.4.2 × 4.8 — where does the decimal point go? (a) 20.16 (b) 0.2016 (c) 2.016 (d) 201.6
7. 7.4.2 × 0.6 — where does the decimal point go? (a) 0.252 (b) 2.52 (c) 25.2 (d) 0.0252
8. 8.8.4 × 0.7 — where does the decimal point go? (a) 58.8 (b) 5.88 (c) 0.588 (d) 0.0588
9. 9.3.2 × 21 — where does the decimal point go? (a) 0.672 (b) 6.72 (c) 672 (d) 67.2
10. 10.8.7 × 0.7 — where does the decimal point go? (a) 0.0609 (b) 0.609 (c) 60.9 (d) 6.09
11. 11.0.33 × 47 — where does the decimal point go? (a) 15.51 (b) 155.1 (c) 1.551 (d) 0.1551
12. 12.3.1 × 1.8 — where does the decimal point go? (a) 55.8 (b) 0.558 (c) 0.0558 (d) 5.58
13. 13.0.58 × 3 — where does the decimal point go? (a) 0.0174 (b) 17.4 (c) 1.74 (d) 0.174
14. 14.3.6 × 3 — where does the decimal point go? (a) 10.8 (b) 1.08 (c) 108 (d) 0.108
15. 15.7.2 × 36 — where does the decimal point go? (a) 2.592 (b) 2592 (c) 259.2 (d) 25.92
16. 16.6.5 × 25 — where does the decimal point go? (a) 16.25 (b) 1625 (c) 162.5 (d) 1.625
17. 17.0.34 × 1.9 — where does the decimal point go? (a) 6.46 (b) 0.0646 (c) 0.00646 (d) 0.646
18. 18.5.4 × 41 — where does the decimal point go? (a) 2214 (b) 22.14 (c) 2.214 (d) 221.4
19. 19.0.33 × 0.3 — where does the decimal point go? (a) 0.099 (b) 0.00099 (c) 0.0099 (d) 0.99
20. 20.8.2 × 48 — where does the decimal point go? (a) 393.6 (b) 39.36 (c) 3.936 (d) 3936
21. 21.8.2 × 8 — where does the decimal point go? (a) 0.656 (b) 656 (c) 6.56 (d) 65.6
22. 22.4.2 × 2 — where does the decimal point go? (a) 84 (b) 0.084 (c) 8.4 (d) 0.84
23. 23.0.53 × 5 — where does the decimal point go? (a) 2.65 (b) 0.0265 (c) 0.265 (d) 26.5
24. 24.0.64 × 2 — where does the decimal point go? (a) 0.0128 (b) 0.128 (c) 1.28 (d) 12.8
25. 25.4.9 × 12 — where does the decimal point go? (a) 0.588 (b) 588 (c) 58.8 (d) 5.88
26. 26.5.8 × 2.2 — where does the decimal point go? (a) 127.6 (b) 0.1276 (c) 1.276 (d) 12.76
27. 27.1.5 × 0.5 — where does the decimal point go? (a) 0.075 (b) 0.75 (c) 0.0075 (d) 7.5
28. 28.0.58 × 0.9 — where does the decimal point go? (a) 0.00522 (b) 5.22 (c) 0.522 (d) 0.0522
29. 29.9.6 × 1.3 — where does the decimal point go? (a) 1.248 (b) 12.48 (c) 0.1248 (d) 124.8
30. 30.0.83 × 31 — where does the decimal point go? (a) 0.2573 (b) 25.73 (c) 257.3 (d) 2.573
31. 31.2.3 × 2.4 — where does the decimal point go? (a) 5.52 (b) 0.0552 (c) 55.2 (d) 0.552
32. 32.0.31 × 8 — where does the decimal point go? (a) 0.0248 (b) 0.248 (c) 24.8 (d) 2.48
33. 33.6.2 × 36 — where does the decimal point go? (a) 2232 (b) 22.32 (c) 2.232 (d) 223.2
34. 34.0.27 × 3 — where does the decimal point go? (a) 0.81 (b) 0.081 (c) 0.0081 (d) 8.1
35. 35.0.18 × 4.9 — where does the decimal point go? (a) 8.82 (b) 0.00882 (c) 0.0882 (d) 0.882
36. 36.7.7 × 0.7 — where does the decimal point go? (a) 0.0539 (b) 5.39 (c) 53.9 (d) 0.539
37. 37.0.42 × 2.1 — where does the decimal point go? (a) 0.0882 (b) 0.882 (c) 8.82 (d) 0.00882
38. 38.0.57 × 49 — where does the decimal point go? (a) 0.2793 (b) 279.3 (c) 27.93 (d) 2.793
39. 39.0.46 × 3 — where does the decimal point go? (a) 0.138 (b) 1.38 (c) 13.8 (d) 0.0138
40. 40.2.5 × 49 — where does the decimal point go? (a) 12.25 (b) 1225 (c) 122.5 (d) 1.225

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