Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 545 · 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. 1.0.86 × 3 — where does the decimal point go? (a) 25.8 (b) 0.0258 (c) 0.258 (d) 2.58
2. 2.0.62 × 0.4 — where does the decimal point go? (a) 0.0248 (b) 0.248 (c) 2.48 (d) 0.00248
3. 3.8.9 × 2.9 — where does the decimal point go? (a) 25.81 (b) 258.1 (c) 2.581 (d) 0.2581
4. 4.0.51 × 1.6 — where does the decimal point go? (a) 0.0816 (b) 0.00816 (c) 0.816 (d) 8.16
5. 5.8.1 × 19 — where does the decimal point go? (a) 1539 (b) 15.39 (c) 1.539 (d) 153.9
6. 6.0.16 × 0.2 — where does the decimal point go? (a) 0.032 (b) 0.0032 (c) 0.00032 (d) 0.32
7. 7.0.33 × 2 — where does the decimal point go? (a) 0.066 (b) 6.6 (c) 0.0066 (d) 0.66
8. 8.0.96 × 3.1 — where does the decimal point go? (a) 29.76 (b) 0.2976 (c) 2.976 (d) 0.02976
9. 9.0.68 × 1.1 — where does the decimal point go? (a) 0.00748 (b) 7.48 (c) 0.0748 (d) 0.748
10. 10.3.5 × 5 — where does the decimal point go? (a) 1.75 (b) 17.5 (c) 175 (d) 0.175
11. 11.6.7 × 7 — where does the decimal point go? (a) 469 (b) 0.469 (c) 46.9 (d) 4.69
12. 12.0.12 × 6 — where does the decimal point go? (a) 0.72 (b) 0.0072 (c) 0.072 (d) 7.2
13. 13.0.56 × 0.2 — where does the decimal point go? (a) 1.12 (b) 0.00112 (c) 0.112 (d) 0.0112
14. 14.0.97 × 8 — where does the decimal point go? (a) 0.776 (b) 77.6 (c) 0.0776 (d) 7.76
15. 15.4.4 × 0.6 — where does the decimal point go? (a) 2.64 (b) 26.4 (c) 0.264 (d) 0.0264
16. 16.0.18 × 12 — where does the decimal point go? (a) 2.16 (b) 0.216 (c) 0.0216 (d) 21.6
17. 17.0.17 × 0.9 — where does the decimal point go? (a) 0.153 (b) 1.53 (c) 0.00153 (d) 0.0153
18. 18.0.89 × 34 — where does the decimal point go? (a) 302.6 (b) 3.026 (c) 0.3026 (d) 30.26
19. 19.9.5 × 7 — where does the decimal point go? (a) 6.65 (b) 66.5 (c) 0.665 (d) 665
20. 20.0.37 × 3 — where does the decimal point go? (a) 0.0111 (b) 0.111 (c) 11.1 (d) 1.11
21. 21.0.14 × 33 — where does the decimal point go? (a) 46.2 (b) 0.0462 (c) 4.62 (d) 0.462
22. 22.2.7 × 12 — where does the decimal point go? (a) 32.4 (b) 3.24 (c) 0.324 (d) 324
23. 23.0.51 × 8 — where does the decimal point go? (a) 4.08 (b) 0.408 (c) 40.8 (d) 0.0408
24. 24.2.9 × 26 — where does the decimal point go? (a) 75.4 (b) 7.54 (c) 0.754 (d) 754
25. 25.8.1 × 4.9 — where does the decimal point go? (a) 0.3969 (b) 39.69 (c) 396.9 (d) 3.969
26. 26.2.3 × 2.2 — where does the decimal point go? (a) 0.0506 (b) 0.506 (c) 5.06 (d) 50.6
27. 27.4.9 × 6 — where does the decimal point go? (a) 0.294 (b) 2.94 (c) 29.4 (d) 294
28. 28.0.93 × 3 — where does the decimal point go? (a) 27.9 (b) 0.279 (c) 0.0279 (d) 2.79
29. 29.4.4 × 27 — where does the decimal point go? (a) 11.88 (b) 1188 (c) 118.8 (d) 1.188
30. 30.0.35 × 0.7 — where does the decimal point go? (a) 0.0245 (b) 0.245 (c) 2.45 (d) 0.00245
31. 31.0.17 × 1.6 — where does the decimal point go? (a) 0.0272 (b) 0.00272 (c) 0.272 (d) 2.72
32. 32.0.76 × 37 — where does the decimal point go? (a) 2.812 (b) 0.2812 (c) 28.12 (d) 281.2
33. 33.7.7 × 2.5 — where does the decimal point go? (a) 192.5 (b) 1.925 (c) 0.1925 (d) 19.25
34. 34.8.8 × 38 — where does the decimal point go? (a) 3.344 (b) 3344 (c) 33.44 (d) 334.4
35. 35.6.5 × 35 — where does the decimal point go? (a) 22.75 (b) 2275 (c) 2.275 (d) 227.5
36. 36.7.5 × 0.5 — where does the decimal point go? (a) 3.75 (b) 0.0375 (c) 0.375 (d) 37.5
37. 37.0.75 × 9 — where does the decimal point go? (a) 0.0675 (b) 6.75 (c) 67.5 (d) 0.675
38. 38.1.9 × 4 — where does the decimal point go? (a) 0.76 (b) 0.076 (c) 7.6 (d) 76
39. 39.3.1 × 35 — where does the decimal point go? (a) 108.5 (b) 1.085 (c) 10.85 (d) 1085
40. 40.0.93 × 2 — where does the decimal point go? (a) 0.186 (b) 0.0186 (c) 1.86 (d) 18.6

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