Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 797 · 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. 1.6.3 × 8 — where does the decimal point go? (a) 504 (b) 50.4 (c) 5.04 (d) 0.504
2. 2.0.17 × 0.8 — where does the decimal point go? (a) 0.136 (b) 0.0136 (c) 0.00136 (d) 1.36
3. 3.0.47 × 0.5 — where does the decimal point go? (a) 0.00235 (b) 0.235 (c) 2.35 (d) 0.0235
4. 4.0.36 × 16 — where does the decimal point go? (a) 0.0576 (b) 57.6 (c) 0.576 (d) 5.76
5. 5.5.1 × 16 — where does the decimal point go? (a) 816 (b) 81.6 (c) 8.16 (d) 0.816
6. 6.0.68 × 9 — where does the decimal point go? (a) 0.612 (b) 0.0612 (c) 61.2 (d) 6.12
7. 7.2.8 × 48 — where does the decimal point go? (a) 1.344 (b) 134.4 (c) 1344 (d) 13.44
8. 8.0.47 × 2 — where does the decimal point go? (a) 0.094 (b) 9.4 (c) 0.0094 (d) 0.94
9. 9.0.32 × 1.2 — where does the decimal point go? (a) 0.384 (b) 0.0384 (c) 3.84 (d) 0.00384
10. 10.0.37 × 0.3 — where does the decimal point go? (a) 0.111 (b) 0.00111 (c) 1.11 (d) 0.0111
11. 11.0.89 × 17 — where does the decimal point go? (a) 151.3 (b) 15.13 (c) 0.1513 (d) 1.513
12. 12.0.52 × 7 — where does the decimal point go? (a) 0.0364 (b) 36.4 (c) 0.364 (d) 3.64
13. 13.5.5 × 7 — where does the decimal point go? (a) 38.5 (b) 3.85 (c) 0.385 (d) 385
14. 14.0.43 × 44 — where does the decimal point go? (a) 0.1892 (b) 18.92 (c) 189.2 (d) 1.892
15. 15.9.9 × 4.4 — where does the decimal point go? (a) 0.4356 (b) 4.356 (c) 435.6 (d) 43.56
16. 16.2.8 × 4.7 — where does the decimal point go? (a) 13.16 (b) 0.1316 (c) 131.6 (d) 1.316
17. 17.1.6 × 0.6 — where does the decimal point go? (a) 0.096 (b) 0.0096 (c) 0.96 (d) 9.6
18. 18.0.81 × 0.2 — where does the decimal point go? (a) 0.0162 (b) 0.162 (c) 1.62 (d) 0.00162
19. 19.0.95 × 0.9 — where does the decimal point go? (a) 0.00855 (b) 0.0855 (c) 8.55 (d) 0.855
20. 20.0.18 × 7 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 12.6 (d) 0.126
21. 21.0.79 × 2.2 — where does the decimal point go? (a) 0.01738 (b) 1.738 (c) 17.38 (d) 0.1738
22. 22.2.1 × 2.7 — where does the decimal point go? (a) 0.0567 (b) 5.67 (c) 56.7 (d) 0.567
23. 23.0.17 × 3 — where does the decimal point go? (a) 0.51 (b) 0.051 (c) 0.0051 (d) 5.1
24. 24.3.4 × 1.1 — where does the decimal point go? (a) 0.374 (b) 37.4 (c) 3.74 (d) 0.0374
25. 25.0.96 × 2.7 — where does the decimal point go? (a) 25.92 (b) 2.592 (c) 0.2592 (d) 0.02592
26. 26.4.8 × 17 — where does the decimal point go? (a) 81.6 (b) 8.16 (c) 0.816 (d) 816
27. 27.6.8 × 0.8 — where does the decimal point go? (a) 5.44 (b) 54.4 (c) 0.0544 (d) 0.544
28. 28.0.19 × 0.5 — where does the decimal point go? (a) 0.00095 (b) 0.95 (c) 0.095 (d) 0.0095
29. 29.0.26 × 48 — where does the decimal point go? (a) 1.248 (b) 0.1248 (c) 12.48 (d) 124.8
30. 30.3.2 × 4 — where does the decimal point go? (a) 0.128 (b) 128 (c) 12.8 (d) 1.28
31. 31.0.91 × 3.3 — where does the decimal point go? (a) 30.03 (b) 0.3003 (c) 0.03003 (d) 3.003
32. 32.3.6 × 4.6 — where does the decimal point go? (a) 16.56 (b) 0.1656 (c) 165.6 (d) 1.656
33. 33.8.5 × 0.7 — where does the decimal point go? (a) 59.5 (b) 0.0595 (c) 0.595 (d) 5.95
34. 34.4.9 × 11 — where does the decimal point go? (a) 53.9 (b) 5.39 (c) 0.539 (d) 539
35. 35.8.4 × 37 — where does the decimal point go? (a) 3108 (b) 310.8 (c) 3.108 (d) 31.08
36. 36.0.32 × 0.8 — where does the decimal point go? (a) 0.0256 (b) 2.56 (c) 0.256 (d) 0.00256
37. 37.5.8 × 22 — where does the decimal point go? (a) 1.276 (b) 127.6 (c) 1276 (d) 12.76
38. 38.0.54 × 0.6 — where does the decimal point go? (a) 0.0324 (b) 0.00324 (c) 3.24 (d) 0.324
39. 39.9.9 × 29 — where does the decimal point go? (a) 2.871 (b) 28.71 (c) 2871 (d) 287.1
40. 40.0.42 × 0.9 — where does the decimal point go? (a) 0.378 (b) 0.00378 (c) 3.78 (d) 0.0378

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