Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 773 · 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. 1.0.48 × 43 — where does the decimal point go? (a) 2.064 (b) 206.4 (c) 0.2064 (d) 20.64
2. 2.0.92 × 17 — where does the decimal point go? (a) 156.4 (b) 1.564 (c) 0.1564 (d) 15.64
3. 3.0.41 × 8 — where does the decimal point go? (a) 0.328 (b) 0.0328 (c) 32.8 (d) 3.28
4. 4.2.1 × 38 — where does the decimal point go? (a) 79.8 (b) 0.798 (c) 798 (d) 7.98
5. 5.2.1 × 4.7 — where does the decimal point go? (a) 9.87 (b) 0.987 (c) 0.0987 (d) 98.7
6. 6.3.8 × 8 — where does the decimal point go? (a) 304 (b) 30.4 (c) 0.304 (d) 3.04
7. 7.6.7 × 0.8 — where does the decimal point go? (a) 5.36 (b) 0.0536 (c) 53.6 (d) 0.536
8. 8.3.9 × 0.2 — where does the decimal point go? (a) 7.8 (b) 0.078 (c) 0.0078 (d) 0.78
9. 9.1.3 × 0.3 — where does the decimal point go? (a) 0.039 (b) 0.0039 (c) 0.39 (d) 3.9
10. 10.0.64 × 4 — where does the decimal point go? (a) 0.256 (b) 25.6 (c) 0.0256 (d) 2.56
11. 11.0.52 × 4.1 — where does the decimal point go? (a) 0.2132 (b) 0.02132 (c) 21.32 (d) 2.132
12. 12.0.31 × 0.6 — where does the decimal point go? (a) 0.00186 (b) 0.186 (c) 1.86 (d) 0.0186
13. 13.0.87 × 28 — where does the decimal point go? (a) 2.436 (b) 0.2436 (c) 243.6 (d) 24.36
14. 14.0.25 × 3 — where does the decimal point go? (a) 0.75 (b) 0.0075 (c) 0.075 (d) 7.5
15. 15.0.81 × 2 — where does the decimal point go? (a) 16.2 (b) 1.62 (c) 0.0162 (d) 0.162
16. 16.0.34 × 1.4 — where does the decimal point go? (a) 0.00476 (b) 0.0476 (c) 0.476 (d) 4.76
17. 17.0.99 × 0.7 — where does the decimal point go? (a) 0.00693 (b) 0.0693 (c) 6.93 (d) 0.693
18. 18.1.4 × 0.7 — where does the decimal point go? (a) 0.098 (b) 0.0098 (c) 9.8 (d) 0.98
19. 19.1.3 × 39 — where does the decimal point go? (a) 5.07 (b) 507 (c) 50.7 (d) 0.507
20. 20.9.2 × 9 — where does the decimal point go? (a) 828 (b) 82.8 (c) 0.828 (d) 8.28
21. 21.0.27 × 3.7 — where does the decimal point go? (a) 0.0999 (b) 0.00999 (c) 9.99 (d) 0.999
22. 22.0.39 × 31 — where does the decimal point go? (a) 0.1209 (b) 120.9 (c) 1.209 (d) 12.09
23. 23.0.92 × 38 — where does the decimal point go? (a) 0.3496 (b) 3.496 (c) 349.6 (d) 34.96
24. 24.0.44 × 0.6 — where does the decimal point go? (a) 0.0264 (b) 0.00264 (c) 2.64 (d) 0.264
25. 25.0.92 × 46 — where does the decimal point go? (a) 42.32 (b) 4.232 (c) 0.4232 (d) 423.2
26. 26.9.2 × 2 — where does the decimal point go? (a) 1.84 (b) 0.184 (c) 18.4 (d) 184
27. 27.3.2 × 0.3 — where does the decimal point go? (a) 0.096 (b) 0.96 (c) 9.6 (d) 0.0096
28. 28.0.31 × 6 — where does the decimal point go? (a) 1.86 (b) 0.0186 (c) 0.186 (d) 18.6
29. 29.7.1 × 4 — where does the decimal point go? (a) 284 (b) 2.84 (c) 0.284 (d) 28.4
30. 30.0.38 × 4 — where does the decimal point go? (a) 0.0152 (b) 1.52 (c) 15.2 (d) 0.152
31. 31.0.32 × 9 — where does the decimal point go? (a) 28.8 (b) 0.288 (c) 0.0288 (d) 2.88
32. 32.2.1 × 17 — where does the decimal point go? (a) 35.7 (b) 0.357 (c) 357 (d) 3.57
33. 33.5.9 × 5 — where does the decimal point go? (a) 29.5 (b) 0.295 (c) 295 (d) 2.95
34. 34.4.1 × 5 — where does the decimal point go? (a) 205 (b) 0.205 (c) 2.05 (d) 20.5
35. 35.9.3 × 26 — where does the decimal point go? (a) 2418 (b) 2.418 (c) 24.18 (d) 241.8
36. 36.4.1 × 0.3 — where does the decimal point go? (a) 0.0123 (b) 1.23 (c) 12.3 (d) 0.123
37. 37.2.2 × 0.4 — where does the decimal point go? (a) 0.88 (b) 0.0088 (c) 0.088 (d) 8.8
38. 38.6.8 × 3 — where does the decimal point go? (a) 20.4 (b) 0.204 (c) 204 (d) 2.04
39. 39.0.46 × 3.1 — where does the decimal point go? (a) 1.426 (b) 14.26 (c) 0.01426 (d) 0.1426
40. 40.3.9 × 13 — where does the decimal point go? (a) 5.07 (b) 507 (c) 50.7 (d) 0.507

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