Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 315 · 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. 1.0.55 × 4.3 — where does the decimal point go? (a) 2.365 (b) 23.65 (c) 0.2365 (d) 0.02365
2. 2.6.2 × 0.4 — where does the decimal point go? (a) 24.8 (b) 0.0248 (c) 2.48 (d) 0.248
3. 3.9.2 × 1.1 — where does the decimal point go? (a) 1.012 (b) 101.2 (c) 0.1012 (d) 10.12
4. 4.1.3 × 1.6 — where does the decimal point go? (a) 0.0208 (b) 20.8 (c) 0.208 (d) 2.08
5. 5.4.9 × 2 — where does the decimal point go? (a) 0.98 (b) 0.098 (c) 98 (d) 9.8
6. 6.0.29 × 8 — where does the decimal point go? (a) 0.232 (b) 23.2 (c) 0.0232 (d) 2.32
7. 7.0.31 × 0.6 — where does the decimal point go? (a) 0.0186 (b) 0.186 (c) 1.86 (d) 0.00186
8. 8.0.51 × 3.5 — where does the decimal point go? (a) 1.785 (b) 17.85 (c) 0.1785 (d) 0.01785
9. 9.7.9 × 6 — where does the decimal point go? (a) 0.474 (b) 47.4 (c) 4.74 (d) 474
10. 10.0.21 × 23 — where does the decimal point go? (a) 0.0483 (b) 48.3 (c) 0.483 (d) 4.83
11. 11.6.7 × 1.8 — where does the decimal point go? (a) 0.1206 (b) 1.206 (c) 120.6 (d) 12.06
12. 12.0.17 × 12 — where does the decimal point go? (a) 2.04 (b) 0.204 (c) 20.4 (d) 0.0204
13. 13.0.95 × 1.7 — where does the decimal point go? (a) 0.1615 (b) 0.01615 (c) 1.615 (d) 16.15
14. 14.0.34 × 2 — where does the decimal point go? (a) 0.068 (b) 0.68 (c) 6.8 (d) 0.0068
15. 15.1.5 × 0.9 — where does the decimal point go? (a) 1.35 (b) 0.135 (c) 0.0135 (d) 13.5
16. 16.0.14 × 8 — where does the decimal point go? (a) 0.0112 (b) 1.12 (c) 0.112 (d) 11.2
17. 17.3.4 × 12 — where does the decimal point go? (a) 40.8 (b) 0.408 (c) 408 (d) 4.08
18. 18.5.7 × 0.5 — where does the decimal point go? (a) 0.285 (b) 0.0285 (c) 28.5 (d) 2.85
19. 19.0.25 × 3 — where does the decimal point go? (a) 7.5 (b) 0.0075 (c) 0.75 (d) 0.075
20. 20.6.6 × 27 — where does the decimal point go? (a) 178.2 (b) 17.82 (c) 1.782 (d) 1782
21. 21.0.87 × 4.7 — where does the decimal point go? (a) 4.089 (b) 0.4089 (c) 0.04089 (d) 40.89
22. 22.5.7 × 5 — where does the decimal point go? (a) 2.85 (b) 0.285 (c) 28.5 (d) 285
23. 23.9.9 × 8 — where does the decimal point go? (a) 0.792 (b) 7.92 (c) 792 (d) 79.2
24. 24.0.28 × 0.9 — where does the decimal point go? (a) 0.00252 (b) 0.0252 (c) 0.252 (d) 2.52
25. 25.2.7 × 3 — where does the decimal point go? (a) 0.081 (b) 81 (c) 0.81 (d) 8.1
26. 26.9.5 × 43 — where does the decimal point go? (a) 40.85 (b) 4085 (c) 4.085 (d) 408.5
27. 27.1.5 × 0.7 — where does the decimal point go? (a) 1.05 (b) 10.5 (c) 0.105 (d) 0.0105
28. 28.8.9 × 0.7 — where does the decimal point go? (a) 0.0623 (b) 0.623 (c) 62.3 (d) 6.23
29. 29.0.57 × 0.2 — where does the decimal point go? (a) 0.114 (b) 0.0114 (c) 0.00114 (d) 1.14
30. 30.8.7 × 0.4 — where does the decimal point go? (a) 3.48 (b) 0.0348 (c) 0.348 (d) 34.8
31. 31.0.14 × 0.3 — where does the decimal point go? (a) 0.042 (b) 0.0042 (c) 0.00042 (d) 0.42
32. 32.7.7 × 2.1 — where does the decimal point go? (a) 0.1617 (b) 1.617 (c) 16.17 (d) 161.7
33. 33.0.46 × 1.1 — where does the decimal point go? (a) 0.00506 (b) 5.06 (c) 0.0506 (d) 0.506
34. 34.8.7 × 2.9 — where does the decimal point go? (a) 25.23 (b) 0.2523 (c) 2.523 (d) 252.3
35. 35.3.7 × 9 — where does the decimal point go? (a) 0.333 (b) 33.3 (c) 3.33 (d) 333
36. 36.8.1 × 2.9 — where does the decimal point go? (a) 2.349 (b) 23.49 (c) 234.9 (d) 0.2349
37. 37.9.7 × 9 — where does the decimal point go? (a) 0.873 (b) 8.73 (c) 87.3 (d) 873
38. 38.0.73 × 4.6 — where does the decimal point go? (a) 33.58 (b) 3.358 (c) 0.3358 (d) 0.03358
39. 39.8.9 × 31 — where does the decimal point go? (a) 275.9 (b) 2.759 (c) 27.59 (d) 2759
40. 40.0.16 × 4 — where does the decimal point go? (a) 0.0064 (b) 0.64 (c) 6.4 (d) 0.064

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