Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 425 · 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. 1.2.7 × 2 — where does the decimal point go? (a) 0.054 (b) 5.4 (c) 0.54 (d) 54
2. 2.0.56 × 28 — where does the decimal point go? (a) 1.568 (b) 0.1568 (c) 156.8 (d) 15.68
3. 3.6.2 × 0.2 — where does the decimal point go? (a) 0.124 (b) 0.0124 (c) 12.4 (d) 1.24
4. 4.0.33 × 28 — where does the decimal point go? (a) 0.924 (b) 9.24 (c) 0.0924 (d) 92.4
5. 5.0.98 × 31 — where does the decimal point go? (a) 303.8 (b) 30.38 (c) 0.3038 (d) 3.038
6. 6.2.1 × 1.1 — where does the decimal point go? (a) 0.0231 (b) 2.31 (c) 23.1 (d) 0.231
7. 7.9.2 × 0.9 — where does the decimal point go? (a) 8.28 (b) 82.8 (c) 0.0828 (d) 0.828
8. 8.1.8 × 4.9 — where does the decimal point go? (a) 0.0882 (b) 0.882 (c) 88.2 (d) 8.82
9. 9.0.84 × 2.3 — where does the decimal point go? (a) 1.932 (b) 0.01932 (c) 19.32 (d) 0.1932
10. 10.5.9 × 0.3 — where does the decimal point go? (a) 17.7 (b) 0.177 (c) 1.77 (d) 0.0177
11. 11.0.98 × 0.7 — where does the decimal point go? (a) 6.86 (b) 0.00686 (c) 0.686 (d) 0.0686
12. 12.0.66 × 16 — where does the decimal point go? (a) 10.56 (b) 0.1056 (c) 1.056 (d) 105.6
13. 13.6.1 × 0.2 — where does the decimal point go? (a) 1.22 (b) 0.0122 (c) 0.122 (d) 12.2
14. 14.0.27 × 0.2 — where does the decimal point go? (a) 0.0054 (b) 0.00054 (c) 0.54 (d) 0.054
15. 15.0.43 × 4 — where does the decimal point go? (a) 0.0172 (b) 1.72 (c) 17.2 (d) 0.172
16. 16.0.23 × 48 — where does the decimal point go? (a) 0.1104 (b) 110.4 (c) 11.04 (d) 1.104
17. 17.3.8 × 4.9 — where does the decimal point go? (a) 0.1862 (b) 186.2 (c) 18.62 (d) 1.862
18. 18.8.6 × 14 — where does the decimal point go? (a) 1.204 (b) 12.04 (c) 1204 (d) 120.4
19. 19.5.7 × 0.7 — where does the decimal point go? (a) 0.0399 (b) 0.399 (c) 3.99 (d) 39.9
20. 20.0.39 × 48 — where does the decimal point go? (a) 0.1872 (b) 1.872 (c) 187.2 (d) 18.72
21. 21.0.39 × 2.7 — where does the decimal point go? (a) 0.1053 (b) 0.01053 (c) 10.53 (d) 1.053
22. 22.0.17 × 1.7 — where does the decimal point go? (a) 2.89 (b) 0.0289 (c) 0.289 (d) 0.00289
23. 23.0.21 × 7 — where does the decimal point go? (a) 1.47 (b) 14.7 (c) 0.0147 (d) 0.147
24. 24.5.4 × 0.3 — where does the decimal point go? (a) 1.62 (b) 0.0162 (c) 16.2 (d) 0.162
25. 25.7.2 × 2 — where does the decimal point go? (a) 0.144 (b) 1.44 (c) 14.4 (d) 144
26. 26.2.6 × 48 — where does the decimal point go? (a) 124.8 (b) 1.248 (c) 12.48 (d) 1248
27. 27.0.12 × 1.9 — where does the decimal point go? (a) 0.228 (b) 0.00228 (c) 0.0228 (d) 2.28
28. 28.5.2 × 4 — where does the decimal point go? (a) 2.08 (b) 208 (c) 20.8 (d) 0.208
29. 29.7.9 × 15 — where does the decimal point go? (a) 1.185 (b) 11.85 (c) 118.5 (d) 1185
30. 30.2.5 × 3.5 — where does the decimal point go? (a) 0.875 (b) 8.75 (c) 0.0875 (d) 87.5
31. 31.1.3 × 39 — where does the decimal point go? (a) 0.507 (b) 5.07 (c) 50.7 (d) 507
32. 32.3.5 × 0.9 — where does the decimal point go? (a) 0.0315 (b) 3.15 (c) 31.5 (d) 0.315
33. 33.1.7 × 0.3 — where does the decimal point go? (a) 0.51 (b) 0.051 (c) 5.1 (d) 0.0051
34. 34.2.9 × 24 — where does the decimal point go? (a) 696 (b) 69.6 (c) 0.696 (d) 6.96
35. 35.8.6 × 8 — where does the decimal point go? (a) 688 (b) 6.88 (c) 0.688 (d) 68.8
36. 36.9.6 × 6 — where does the decimal point go? (a) 576 (b) 5.76 (c) 57.6 (d) 0.576
37. 37.0.66 × 4.9 — where does the decimal point go? (a) 3.234 (b) 32.34 (c) 0.03234 (d) 0.3234
38. 38.9.3 × 0.2 — where does the decimal point go? (a) 0.0186 (b) 0.186 (c) 1.86 (d) 18.6
39. 39.0.72 × 36 — where does the decimal point go? (a) 2.592 (b) 0.2592 (c) 259.2 (d) 25.92
40. 40.0.68 × 38 — where does the decimal point go? (a) 25.84 (b) 0.2584 (c) 258.4 (d) 2.584

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