Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 932 · 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. 1.3.9 × 0.4 — where does the decimal point go? (a) 0.156 (b) 15.6 (c) 1.56 (d) 0.0156
2. 2.0.74 × 18 — where does the decimal point go? (a) 13.32 (b) 133.2 (c) 1.332 (d) 0.1332
3. 3.1.8 × 0.2 — where does the decimal point go? (a) 0.36 (b) 0.0036 (c) 0.036 (d) 3.6
4. 4.9.2 × 0.4 — where does the decimal point go? (a) 36.8 (b) 0.0368 (c) 0.368 (d) 3.68
5. 5.4.6 × 4.9 — where does the decimal point go? (a) 22.54 (b) 0.2254 (c) 2.254 (d) 225.4
6. 6.9.9 × 3.1 — where does the decimal point go? (a) 30.69 (b) 306.9 (c) 0.3069 (d) 3.069
7. 7.0.67 × 5 — where does the decimal point go? (a) 33.5 (b) 0.335 (c) 0.0335 (d) 3.35
8. 8.7.1 × 1.1 — where does the decimal point go? (a) 0.0781 (b) 78.1 (c) 7.81 (d) 0.781
9. 9.1.3 × 5 — where does the decimal point go? (a) 0.065 (b) 65 (c) 0.65 (d) 6.5
10. 10.0.24 × 4 — where does the decimal point go? (a) 9.6 (b) 0.0096 (c) 0.96 (d) 0.096
11. 11.6.9 × 3.4 — where does the decimal point go? (a) 0.2346 (b) 23.46 (c) 2.346 (d) 234.6
12. 12.0.17 × 4.8 — where does the decimal point go? (a) 0.00816 (b) 0.0816 (c) 0.816 (d) 8.16
13. 13.4.2 × 1.6 — where does the decimal point go? (a) 0.0672 (b) 67.2 (c) 0.672 (d) 6.72
14. 14.0.36 × 14 — where does the decimal point go? (a) 5.04 (b) 50.4 (c) 0.504 (d) 0.0504
15. 15.3.9 × 1.6 — where does the decimal point go? (a) 0.624 (b) 6.24 (c) 0.0624 (d) 62.4
16. 16.1.5 × 0.3 — where does the decimal point go? (a) 4.5 (b) 0.0045 (c) 0.45 (d) 0.045
17. 17.0.73 × 0.5 — where does the decimal point go? (a) 0.00365 (b) 0.0365 (c) 3.65 (d) 0.365
18. 18.0.33 × 2 — where does the decimal point go? (a) 0.0066 (b) 0.66 (c) 0.066 (d) 6.6
19. 19.0.28 × 0.4 — where does the decimal point go? (a) 1.12 (b) 0.112 (c) 0.0112 (d) 0.00112
20. 20.0.39 × 4.7 — where does the decimal point go? (a) 0.01833 (b) 18.33 (c) 1.833 (d) 0.1833
21. 21.0.23 × 1.1 — where does the decimal point go? (a) 0.00253 (b) 2.53 (c) 0.0253 (d) 0.253
22. 22.1.3 × 14 — where does the decimal point go? (a) 18.2 (b) 0.182 (c) 1.82 (d) 182
23. 23.0.15 × 0.7 — where does the decimal point go? (a) 0.0105 (b) 1.05 (c) 0.105 (d) 0.00105
24. 24.0.97 × 12 — where does the decimal point go? (a) 1.164 (b) 116.4 (c) 11.64 (d) 0.1164
25. 25.0.42 × 0.9 — where does the decimal point go? (a) 0.0378 (b) 3.78 (c) 0.378 (d) 0.00378
26. 26.8.4 × 22 — where does the decimal point go? (a) 184.8 (b) 18.48 (c) 1848 (d) 1.848
27. 27.6.9 × 0.4 — where does the decimal point go? (a) 2.76 (b) 0.276 (c) 27.6 (d) 0.0276
28. 28.0.89 × 8 — where does the decimal point go? (a) 0.712 (b) 0.0712 (c) 71.2 (d) 7.12
29. 29.7.7 × 2 — where does the decimal point go? (a) 15.4 (b) 1.54 (c) 0.154 (d) 154
30. 30.4.7 × 0.9 — where does the decimal point go? (a) 42.3 (b) 0.0423 (c) 4.23 (d) 0.423
31. 31.2.7 × 0.3 — where does the decimal point go? (a) 0.0081 (b) 0.81 (c) 8.1 (d) 0.081
32. 32.5.9 × 27 — where does the decimal point go? (a) 15.93 (b) 1593 (c) 1.593 (d) 159.3
33. 33.0.84 × 1.8 — where does the decimal point go? (a) 0.01512 (b) 1.512 (c) 0.1512 (d) 15.12
34. 34.9.7 × 49 — where does the decimal point go? (a) 4753 (b) 47.53 (c) 4.753 (d) 475.3
35. 35.7.3 × 0.8 — where does the decimal point go? (a) 0.0584 (b) 5.84 (c) 58.4 (d) 0.584
36. 36.2.2 × 0.2 — where does the decimal point go? (a) 0.044 (b) 0.44 (c) 4.4 (d) 0.0044
37. 37.0.29 × 26 — where does the decimal point go? (a) 7.54 (b) 75.4 (c) 0.0754 (d) 0.754
38. 38.3.7 × 7 — where does the decimal point go? (a) 2.59 (b) 259 (c) 0.259 (d) 25.9
39. 39.0.31 × 1.8 — where does the decimal point go? (a) 0.0558 (b) 5.58 (c) 0.00558 (d) 0.558
40. 40.0.42 × 4.4 — where does the decimal point go? (a) 0.01848 (b) 1.848 (c) 18.48 (d) 0.1848

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