Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 39 · 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. 1.0.16 × 1.1 — where does the decimal point go? (a) 0.176 (b) 0.00176 (c) 1.76 (d) 0.0176
2. 2.6.3 × 26 — where does the decimal point go? (a) 163.8 (b) 1.638 (c) 1638 (d) 16.38
3. 3.0.15 × 2.3 — where does the decimal point go? (a) 3.45 (b) 0.345 (c) 0.00345 (d) 0.0345
4. 4.0.72 × 0.3 — where does the decimal point go? (a) 0.0216 (b) 0.216 (c) 0.00216 (d) 2.16
5. 5.5.4 × 0.3 — where does the decimal point go? (a) 1.62 (b) 0.162 (c) 0.0162 (d) 16.2
6. 6.0.23 × 2.2 — where does the decimal point go? (a) 0.00506 (b) 0.506 (c) 5.06 (d) 0.0506
7. 7.0.12 × 8 — where does the decimal point go? (a) 0.096 (b) 9.6 (c) 0.96 (d) 0.0096
8. 8.5.8 × 0.7 — where does the decimal point go? (a) 4.06 (b) 0.0406 (c) 40.6 (d) 0.406
9. 9.0.71 × 4.1 — where does the decimal point go? (a) 0.02911 (b) 0.2911 (c) 2.911 (d) 29.11
10. 10.6.9 × 17 — where does the decimal point go? (a) 11.73 (b) 117.3 (c) 1173 (d) 1.173
11. 11.9.8 × 0.4 — where does the decimal point go? (a) 0.392 (b) 3.92 (c) 0.0392 (d) 39.2
12. 12.0.69 × 3.8 — where does the decimal point go? (a) 0.2622 (b) 0.02622 (c) 26.22 (d) 2.622
13. 13.8.9 × 45 — where does the decimal point go? (a) 400.5 (b) 4005 (c) 4.005 (d) 40.05
14. 14.7.5 × 9 — where does the decimal point go? (a) 6.75 (b) 67.5 (c) 675 (d) 0.675
15. 15.0.45 × 4.9 — where does the decimal point go? (a) 2.205 (b) 0.02205 (c) 0.2205 (d) 22.05
16. 16.2.9 × 9 — where does the decimal point go? (a) 26.1 (b) 2.61 (c) 261 (d) 0.261
17. 17.5.6 × 31 — where does the decimal point go? (a) 1.736 (b) 17.36 (c) 1736 (d) 173.6
18. 18.6.7 × 11 — where does the decimal point go? (a) 0.737 (b) 7.37 (c) 737 (d) 73.7
19. 19.6.4 × 0.8 — where does the decimal point go? (a) 0.0512 (b) 0.512 (c) 51.2 (d) 5.12
20. 20.2.2 × 0.2 — where does the decimal point go? (a) 0.044 (b) 0.0044 (c) 0.44 (d) 4.4
21. 21.0.33 × 4 — where does the decimal point go? (a) 13.2 (b) 0.132 (c) 0.0132 (d) 1.32
22. 22.0.34 × 1.6 — where does the decimal point go? (a) 0.00544 (b) 5.44 (c) 0.0544 (d) 0.544
23. 23.0.56 × 3 — where does the decimal point go? (a) 16.8 (b) 0.0168 (c) 1.68 (d) 0.168
24. 24.0.23 × 7 — where does the decimal point go? (a) 0.161 (b) 16.1 (c) 0.0161 (d) 1.61
25. 25.0.81 × 3 — where does the decimal point go? (a) 0.243 (b) 2.43 (c) 24.3 (d) 0.0243
26. 26.3.2 × 4.1 — where does the decimal point go? (a) 13.12 (b) 1.312 (c) 131.2 (d) 0.1312
27. 27.3.1 × 0.9 — where does the decimal point go? (a) 2.79 (b) 0.0279 (c) 0.279 (d) 27.9
28. 28.2.5 × 1.5 — where does the decimal point go? (a) 0.0375 (b) 3.75 (c) 0.375 (d) 37.5
29. 29.0.62 × 3 — where does the decimal point go? (a) 1.86 (b) 0.186 (c) 0.0186 (d) 18.6
30. 30.0.31 × 1.2 — where does the decimal point go? (a) 3.72 (b) 0.372 (c) 0.00372 (d) 0.0372
31. 31.0.92 × 0.3 — where does the decimal point go? (a) 0.0276 (b) 2.76 (c) 0.00276 (d) 0.276
32. 32.0.19 × 0.6 — where does the decimal point go? (a) 1.14 (b) 0.00114 (c) 0.0114 (d) 0.114
33. 33.0.67 × 5 — where does the decimal point go? (a) 3.35 (b) 0.335 (c) 33.5 (d) 0.0335
34. 34.1.4 × 7 — where does the decimal point go? (a) 0.098 (b) 0.98 (c) 9.8 (d) 98
35. 35.5.5 × 5 — where does the decimal point go? (a) 0.275 (b) 275 (c) 27.5 (d) 2.75
36. 36.7.4 × 41 — where does the decimal point go? (a) 30.34 (b) 3.034 (c) 3034 (d) 303.4
37. 37.7.8 × 3 — where does the decimal point go? (a) 2.34 (b) 234 (c) 23.4 (d) 0.234
38. 38.2.4 × 0.9 — where does the decimal point go? (a) 21.6 (b) 0.216 (c) 2.16 (d) 0.0216
39. 39.3.1 × 2 — where does the decimal point go? (a) 6.2 (b) 0.062 (c) 0.62 (d) 62
40. 40.5.4 × 19 — where does the decimal point go? (a) 1.026 (b) 10.26 (c) 1026 (d) 102.6

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