Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 337 · 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. 1.4.1 × 1.8 — where does the decimal point go? (a) 0.0738 (b) 0.738 (c) 73.8 (d) 7.38
2. 2.0.61 × 0.5 — where does the decimal point go? (a) 3.05 (b) 0.0305 (c) 0.00305 (d) 0.305
3. 3.0.22 × 3 — where does the decimal point go? (a) 6.6 (b) 0.066 (c) 0.66 (d) 0.0066
4. 4.8.3 × 8 — where does the decimal point go? (a) 66.4 (b) 6.64 (c) 0.664 (d) 664
5. 5.0.69 × 5 — where does the decimal point go? (a) 0.0345 (b) 34.5 (c) 0.345 (d) 3.45
6. 6.2.2 × 9 — where does the decimal point go? (a) 1.98 (b) 0.198 (c) 198 (d) 19.8
7. 7.0.56 × 7 — where does the decimal point go? (a) 0.392 (b) 39.2 (c) 3.92 (d) 0.0392
8. 8.0.31 × 0.3 — where does the decimal point go? (a) 0.00093 (b) 0.0093 (c) 0.93 (d) 0.093
9. 9.0.79 × 3.1 — where does the decimal point go? (a) 0.2449 (b) 24.49 (c) 2.449 (d) 0.02449
10. 10.0.26 × 36 — where does the decimal point go? (a) 0.936 (b) 0.0936 (c) 9.36 (d) 93.6
11. 11.0.36 × 3 — where does the decimal point go? (a) 0.108 (b) 10.8 (c) 1.08 (d) 0.0108
12. 12.4.9 × 0.7 — where does the decimal point go? (a) 0.0343 (b) 34.3 (c) 3.43 (d) 0.343
13. 13.1.4 × 0.6 — where does the decimal point go? (a) 8.4 (b) 0.084 (c) 0.0084 (d) 0.84
14. 14.2.9 × 32 — where does the decimal point go? (a) 92.8 (b) 9.28 (c) 0.928 (d) 928
15. 15.0.92 × 4 — where does the decimal point go? (a) 0.0368 (b) 3.68 (c) 0.368 (d) 36.8
16. 16.0.38 × 0.6 — where does the decimal point go? (a) 2.28 (b) 0.0228 (c) 0.228 (d) 0.00228
17. 17.7.8 × 3.1 — where does the decimal point go? (a) 0.2418 (b) 2.418 (c) 241.8 (d) 24.18
18. 18.0.52 × 9 — where does the decimal point go? (a) 46.8 (b) 0.468 (c) 4.68 (d) 0.0468
19. 19.0.67 × 1.3 — where does the decimal point go? (a) 0.00871 (b) 0.0871 (c) 8.71 (d) 0.871
20. 20.0.33 × 48 — where does the decimal point go? (a) 0.1584 (b) 1.584 (c) 158.4 (d) 15.84
21. 21.0.48 × 14 — where does the decimal point go? (a) 67.2 (b) 6.72 (c) 0.0672 (d) 0.672
22. 22.0.97 × 6 — where does the decimal point go? (a) 58.2 (b) 5.82 (c) 0.582 (d) 0.0582
23. 23.3.3 × 0.8 — where does the decimal point go? (a) 0.264 (b) 0.0264 (c) 2.64 (d) 26.4
24. 24.8.5 × 2.5 — where does the decimal point go? (a) 212.5 (b) 0.2125 (c) 21.25 (d) 2.125
25. 25.7.9 × 0.6 — where does the decimal point go? (a) 0.0474 (b) 47.4 (c) 4.74 (d) 0.474
26. 26.3.6 × 3 — where does the decimal point go? (a) 10.8 (b) 1.08 (c) 0.108 (d) 108
27. 27.0.57 × 18 — where does the decimal point go? (a) 10.26 (b) 0.1026 (c) 102.6 (d) 1.026
28. 28.7.4 × 37 — where does the decimal point go? (a) 27.38 (b) 2.738 (c) 273.8 (d) 2738
29. 29.8.6 × 0.8 — where does the decimal point go? (a) 0.688 (b) 6.88 (c) 0.0688 (d) 68.8
30. 30.0.51 × 2.7 — where does the decimal point go? (a) 0.01377 (b) 0.1377 (c) 13.77 (d) 1.377
31. 31.1.9 × 0.3 — where does the decimal point go? (a) 0.0057 (b) 5.7 (c) 0.057 (d) 0.57
32. 32.6.1 × 0.2 — where does the decimal point go? (a) 0.0122 (b) 1.22 (c) 0.122 (d) 12.2
33. 33.0.97 × 0.5 — where does the decimal point go? (a) 0.485 (b) 0.0485 (c) 0.00485 (d) 4.85
34. 34.0.14 × 0.8 — where does the decimal point go? (a) 0.112 (b) 0.00112 (c) 0.0112 (d) 1.12
35. 35.6.8 × 4 — where does the decimal point go? (a) 27.2 (b) 0.272 (c) 272 (d) 2.72
36. 36.0.28 × 3 — where does the decimal point go? (a) 0.84 (b) 0.0084 (c) 8.4 (d) 0.084
37. 37.3.1 × 4 — where does the decimal point go? (a) 0.124 (b) 1.24 (c) 124 (d) 12.4
38. 38.7.9 × 25 — where does the decimal point go? (a) 1975 (b) 197.5 (c) 1.975 (d) 19.75
39. 39.0.86 × 2 — where does the decimal point go? (a) 17.2 (b) 0.172 (c) 0.0172 (d) 1.72
40. 40.0.88 × 16 — where does the decimal point go? (a) 14.08 (b) 140.8 (c) 1.408 (d) 0.1408

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