Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 98 · 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. 1.0.72 × 0.4 — where does the decimal point go? (a) 0.0288 (b) 0.00288 (c) 2.88 (d) 0.288
2. 2.0.99 × 0.7 — where does the decimal point go? (a) 0.693 (b) 0.00693 (c) 6.93 (d) 0.0693
3. 3.3.8 × 48 — where does the decimal point go? (a) 182.4 (b) 1824 (c) 1.824 (d) 18.24
4. 4.4.6 × 0.7 — where does the decimal point go? (a) 0.322 (b) 0.0322 (c) 32.2 (d) 3.22
5. 5.0.44 × 2 — where does the decimal point go? (a) 0.088 (b) 0.0088 (c) 8.8 (d) 0.88
6. 6.2.9 × 0.3 — where does the decimal point go? (a) 0.087 (b) 0.87 (c) 0.0087 (d) 8.7
7. 7.0.63 × 1.4 — where does the decimal point go? (a) 0.00882 (b) 0.882 (c) 0.0882 (d) 8.82
8. 8.1.7 × 26 — where does the decimal point go? (a) 4.42 (b) 442 (c) 0.442 (d) 44.2
9. 9.5.8 × 48 — where does the decimal point go? (a) 27.84 (b) 2.784 (c) 278.4 (d) 2784
10. 10.6.8 × 28 — where does the decimal point go? (a) 19.04 (b) 1.904 (c) 190.4 (d) 1904
11. 11.0.41 × 3 — where does the decimal point go? (a) 0.123 (b) 1.23 (c) 12.3 (d) 0.0123
12. 12.5.6 × 3 — where does the decimal point go? (a) 16.8 (b) 0.168 (c) 1.68 (d) 168
13. 13.7.5 × 21 — where does the decimal point go? (a) 1.575 (b) 1575 (c) 15.75 (d) 157.5
14. 14.5.4 × 3 — where does the decimal point go? (a) 162 (b) 0.162 (c) 1.62 (d) 16.2
15. 15.2.1 × 7 — where does the decimal point go? (a) 1.47 (b) 0.147 (c) 147 (d) 14.7
16. 16.0.93 × 0.5 — where does the decimal point go? (a) 4.65 (b) 0.00465 (c) 0.0465 (d) 0.465
17. 17.8.1 × 9 — where does the decimal point go? (a) 7.29 (b) 72.9 (c) 729 (d) 0.729
18. 18.0.54 × 9 — where does the decimal point go? (a) 0.0486 (b) 4.86 (c) 48.6 (d) 0.486
19. 19.9.7 × 3 — where does the decimal point go? (a) 2.91 (b) 29.1 (c) 291 (d) 0.291
20. 20.2.6 × 2 — where does the decimal point go? (a) 0.052 (b) 52 (c) 0.52 (d) 5.2
21. 21.2.9 × 4.3 — where does the decimal point go? (a) 12.47 (b) 124.7 (c) 0.1247 (d) 1.247
22. 22.0.66 × 4.4 — where does the decimal point go? (a) 29.04 (b) 0.2904 (c) 0.02904 (d) 2.904
23. 23.3.6 × 4.3 — where does the decimal point go? (a) 0.1548 (b) 154.8 (c) 1.548 (d) 15.48
24. 24.0.65 × 2.3 — where does the decimal point go? (a) 0.01495 (b) 14.95 (c) 0.1495 (d) 1.495
25. 25.9.2 × 0.8 — where does the decimal point go? (a) 0.736 (b) 73.6 (c) 0.0736 (d) 7.36
26. 26.7.3 × 4.6 — where does the decimal point go? (a) 0.3358 (b) 335.8 (c) 33.58 (d) 3.358
27. 27.3.3 × 0.9 — where does the decimal point go? (a) 2.97 (b) 29.7 (c) 0.297 (d) 0.0297
28. 28.0.83 × 1.9 — where does the decimal point go? (a) 0.1577 (b) 15.77 (c) 0.01577 (d) 1.577
29. 29.5.6 × 1.4 — where does the decimal point go? (a) 7.84 (b) 0.784 (c) 78.4 (d) 0.0784
30. 30.0.87 × 18 — where does the decimal point go? (a) 156.6 (b) 1.566 (c) 0.1566 (d) 15.66
31. 31.0.91 × 32 — where does the decimal point go? (a) 0.2912 (b) 29.12 (c) 2.912 (d) 291.2
32. 32.6.3 × 0.9 — where does the decimal point go? (a) 0.567 (b) 56.7 (c) 0.0567 (d) 5.67
33. 33.4.6 × 0.3 — where does the decimal point go? (a) 13.8 (b) 0.0138 (c) 1.38 (d) 0.138
34. 34.0.66 × 0.8 — where does the decimal point go? (a) 0.00528 (b) 0.0528 (c) 5.28 (d) 0.528
35. 35.8.4 × 0.3 — where does the decimal point go? (a) 2.52 (b) 25.2 (c) 0.252 (d) 0.0252
36. 36.1.4 × 46 — where does the decimal point go? (a) 6.44 (b) 644 (c) 64.4 (d) 0.644
37. 37.0.99 × 47 — where does the decimal point go? (a) 465.3 (b) 0.4653 (c) 4.653 (d) 46.53
38. 38.0.93 × 7 — where does the decimal point go? (a) 0.651 (b) 0.0651 (c) 65.1 (d) 6.51
39. 39.8.7 × 5 — where does the decimal point go? (a) 0.435 (b) 435 (c) 4.35 (d) 43.5
40. 40.4.7 × 0.2 — where does the decimal point go? (a) 0.094 (b) 0.94 (c) 9.4 (d) 0.0094

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