Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 761 · 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. 1.3.8 × 0.6 — where does the decimal point go? (a) 0.0228 (b) 0.228 (c) 22.8 (d) 2.28
2. 2.3.9 × 2.8 — where does the decimal point go? (a) 0.1092 (b) 109.2 (c) 1.092 (d) 10.92
3. 3.2.4 × 3 — where does the decimal point go? (a) 0.72 (b) 7.2 (c) 0.072 (d) 72
4. 4.8.9 × 25 — where does the decimal point go? (a) 22.25 (b) 2.225 (c) 222.5 (d) 2225
5. 5.0.55 × 9 — where does the decimal point go? (a) 4.95 (b) 49.5 (c) 0.0495 (d) 0.495
6. 6.2.7 × 2.8 — where does the decimal point go? (a) 0.756 (b) 75.6 (c) 0.0756 (d) 7.56
7. 7.4.7 × 43 — where does the decimal point go? (a) 202.1 (b) 2.021 (c) 2021 (d) 20.21
8. 8.2.8 × 3 — where does the decimal point go? (a) 84 (b) 0.84 (c) 8.4 (d) 0.084
9. 9.4.2 × 32 — where does the decimal point go? (a) 1.344 (b) 1344 (c) 13.44 (d) 134.4
10. 10.0.66 × 48 — where does the decimal point go? (a) 3.168 (b) 0.3168 (c) 31.68 (d) 316.8
11. 11.0.49 × 9 — where does the decimal point go? (a) 0.441 (b) 4.41 (c) 44.1 (d) 0.0441
12. 12.6.1 × 0.5 — where does the decimal point go? (a) 3.05 (b) 0.0305 (c) 30.5 (d) 0.305
13. 13.1.9 × 2 — where does the decimal point go? (a) 3.8 (b) 38 (c) 0.38 (d) 0.038
14. 14.0.68 × 0.2 — where does the decimal point go? (a) 0.136 (b) 0.0136 (c) 0.00136 (d) 1.36
15. 15.0.54 × 2 — where does the decimal point go? (a) 0.0108 (b) 1.08 (c) 10.8 (d) 0.108
16. 16.4.7 × 0.4 — where does the decimal point go? (a) 1.88 (b) 18.8 (c) 0.0188 (d) 0.188
17. 17.0.69 × 42 — where does the decimal point go? (a) 289.8 (b) 28.98 (c) 0.2898 (d) 2.898
18. 18.0.79 × 0.5 — where does the decimal point go? (a) 0.0395 (b) 0.395 (c) 3.95 (d) 0.00395
19. 19.1.7 × 2.8 — where does the decimal point go? (a) 0.476 (b) 4.76 (c) 0.0476 (d) 47.6
20. 20.0.81 × 2.1 — where does the decimal point go? (a) 17.01 (b) 0.01701 (c) 0.1701 (d) 1.701
21. 21.6.7 × 42 — where does the decimal point go? (a) 281.4 (b) 2814 (c) 28.14 (d) 2.814
22. 22.2.3 × 29 — where does the decimal point go? (a) 66.7 (b) 667 (c) 6.67 (d) 0.667
23. 23.6.8 × 3 — where does the decimal point go? (a) 20.4 (b) 0.204 (c) 2.04 (d) 204
24. 24.0.19 × 0.8 — where does the decimal point go? (a) 0.0152 (b) 1.52 (c) 0.152 (d) 0.00152
25. 25.0.91 × 32 — where does the decimal point go? (a) 29.12 (b) 0.2912 (c) 291.2 (d) 2.912
26. 26.0.81 × 45 — where does the decimal point go? (a) 36.45 (b) 364.5 (c) 3.645 (d) 0.3645
27. 27.5.4 × 28 — where does the decimal point go? (a) 1512 (b) 15.12 (c) 1.512 (d) 151.2
28. 28.5.6 × 46 — where does the decimal point go? (a) 2.576 (b) 25.76 (c) 257.6 (d) 2576
29. 29.8.3 × 48 — where does the decimal point go? (a) 3984 (b) 398.4 (c) 39.84 (d) 3.984
30. 30.0.34 × 31 — where does the decimal point go? (a) 10.54 (b) 105.4 (c) 0.1054 (d) 1.054
31. 31.0.29 × 0.7 — where does the decimal point go? (a) 0.203 (b) 0.0203 (c) 2.03 (d) 0.00203
32. 32.6.9 × 0.5 — where does the decimal point go? (a) 0.0345 (b) 3.45 (c) 0.345 (d) 34.5
33. 33.0.53 × 0.5 — where does the decimal point go? (a) 0.265 (b) 0.0265 (c) 0.00265 (d) 2.65
34. 34.0.76 × 3 — where does the decimal point go? (a) 0.0228 (b) 0.228 (c) 2.28 (d) 22.8
35. 35.0.47 × 4 — where does the decimal point go? (a) 1.88 (b) 0.188 (c) 18.8 (d) 0.0188
36. 36.0.37 × 3.1 — where does the decimal point go? (a) 11.47 (b) 0.01147 (c) 1.147 (d) 0.1147
37. 37.9.9 × 3.2 — where does the decimal point go? (a) 31.68 (b) 316.8 (c) 3.168 (d) 0.3168
38. 38.2.7 × 4.5 — where does the decimal point go? (a) 121.5 (b) 0.1215 (c) 1.215 (d) 12.15
39. 39.0.21 × 0.4 — where does the decimal point go? (a) 0.0084 (b) 0.84 (c) 0.00084 (d) 0.084
40. 40.0.94 × 6 — where does the decimal point go? (a) 56.4 (b) 0.564 (c) 5.64 (d) 0.0564

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