Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 726 · 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. 1.0.81 × 0.7 — where does the decimal point go? (a) 0.0567 (b) 0.00567 (c) 0.567 (d) 5.67
2. 2.2.8 × 0.3 — where does the decimal point go? (a) 0.084 (b) 8.4 (c) 0.84 (d) 0.0084
3. 3.2.6 × 3.2 — where does the decimal point go? (a) 0.0832 (b) 83.2 (c) 0.832 (d) 8.32
4. 4.0.72 × 4.3 — where does the decimal point go? (a) 0.3096 (b) 3.096 (c) 30.96 (d) 0.03096
5. 5.0.34 × 7 — where does the decimal point go? (a) 0.0238 (b) 23.8 (c) 0.238 (d) 2.38
6. 6.2.9 × 3.1 — where does the decimal point go? (a) 8.99 (b) 0.0899 (c) 0.899 (d) 89.9
7. 7.0.47 × 1.3 — where does the decimal point go? (a) 0.00611 (b) 0.611 (c) 6.11 (d) 0.0611
8. 8.3.7 × 12 — where does the decimal point go? (a) 44.4 (b) 0.444 (c) 444 (d) 4.44
9. 9.0.23 × 0.6 — where does the decimal point go? (a) 0.0138 (b) 0.138 (c) 1.38 (d) 0.00138
10. 10.0.91 × 0.7 — where does the decimal point go? (a) 0.637 (b) 0.0637 (c) 6.37 (d) 0.00637
11. 11.3.1 × 0.4 — where does the decimal point go? (a) 1.24 (b) 0.124 (c) 0.0124 (d) 12.4
12. 12.0.93 × 8 — where does the decimal point go? (a) 0.0744 (b) 7.44 (c) 74.4 (d) 0.744
13. 13.3.5 × 21 — where does the decimal point go? (a) 73.5 (b) 0.735 (c) 735 (d) 7.35
14. 14.5.1 × 1.5 — where does the decimal point go? (a) 0.0765 (b) 7.65 (c) 76.5 (d) 0.765
15. 15.0.84 × 17 — where does the decimal point go? (a) 14.28 (b) 0.1428 (c) 1.428 (d) 142.8
16. 16.1.2 × 2.9 — where does the decimal point go? (a) 0.348 (b) 3.48 (c) 34.8 (d) 0.0348
17. 17.0.63 × 6 — where does the decimal point go? (a) 0.378 (b) 0.0378 (c) 3.78 (d) 37.8
18. 18.1.2 × 7 — where does the decimal point go? (a) 0.084 (b) 8.4 (c) 0.84 (d) 84
19. 19.0.33 × 2 — where does the decimal point go? (a) 0.66 (b) 0.0066 (c) 0.066 (d) 6.6
20. 20.0.83 × 3.4 — where does the decimal point go? (a) 2.822 (b) 28.22 (c) 0.2822 (d) 0.02822
21. 21.3.5 × 4.7 — where does the decimal point go? (a) 1.645 (b) 164.5 (c) 16.45 (d) 0.1645
22. 22.2.9 × 0.3 — where does the decimal point go? (a) 0.087 (b) 0.0087 (c) 8.7 (d) 0.87
23. 23.0.79 × 0.5 — where does the decimal point go? (a) 0.0395 (b) 0.395 (c) 3.95 (d) 0.00395
24. 24.3.9 × 0.6 — where does the decimal point go? (a) 2.34 (b) 0.0234 (c) 23.4 (d) 0.234
25. 25.6.6 × 3.7 — where does the decimal point go? (a) 2.442 (b) 24.42 (c) 0.2442 (d) 244.2
26. 26.0.17 × 14 — where does the decimal point go? (a) 0.238 (b) 23.8 (c) 2.38 (d) 0.0238
27. 27.0.58 × 19 — where does the decimal point go? (a) 0.1102 (b) 1.102 (c) 110.2 (d) 11.02
28. 28.8.7 × 0.6 — where does the decimal point go? (a) 0.522 (b) 0.0522 (c) 52.2 (d) 5.22
29. 29.0.47 × 37 — where does the decimal point go? (a) 1.739 (b) 0.1739 (c) 17.39 (d) 173.9
30. 30.1.4 × 9 — where does the decimal point go? (a) 126 (b) 1.26 (c) 12.6 (d) 0.126
31. 31.6.9 × 27 — where does the decimal point go? (a) 1863 (b) 186.3 (c) 1.863 (d) 18.63
32. 32.9.6 × 4.9 — where does the decimal point go? (a) 0.4704 (b) 47.04 (c) 4.704 (d) 470.4
33. 33.4.2 × 49 — where does the decimal point go? (a) 20.58 (b) 205.8 (c) 2058 (d) 2.058
34. 34.0.13 × 0.8 — where does the decimal point go? (a) 0.00104 (b) 0.104 (c) 0.0104 (d) 1.04
35. 35.5.7 × 12 — where does the decimal point go? (a) 68.4 (b) 6.84 (c) 684 (d) 0.684
36. 36.0.17 × 0.2 — where does the decimal point go? (a) 0.34 (b) 0.034 (c) 0.00034 (d) 0.0034
37. 37.6.5 × 47 — where does the decimal point go? (a) 3.055 (b) 305.5 (c) 30.55 (d) 3055
38. 38.3.3 × 4.6 — where does the decimal point go? (a) 15.18 (b) 0.1518 (c) 1.518 (d) 151.8
39. 39.8.4 × 0.4 — where does the decimal point go? (a) 33.6 (b) 0.0336 (c) 3.36 (d) 0.336
40. 40.0.21 × 5 — where does the decimal point go? (a) 10.5 (b) 0.0105 (c) 1.05 (d) 0.105

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