Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 795 · 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. 1.0.52 × 3.4 — where does the decimal point go? (a) 1.768 (b) 17.68 (c) 0.1768 (d) 0.01768
2. 2.0.63 × 0.3 — where does the decimal point go? (a) 0.189 (b) 0.0189 (c) 0.00189 (d) 1.89
3. 3.9.4 × 4.9 — where does the decimal point go? (a) 0.4606 (b) 4.606 (c) 460.6 (d) 46.06
4. 4.0.28 × 8 — where does the decimal point go? (a) 0.0224 (b) 0.224 (c) 22.4 (d) 2.24
5. 5.4.4 × 2.8 — where does the decimal point go? (a) 0.1232 (b) 12.32 (c) 1.232 (d) 123.2
6. 6.0.68 × 0.2 — where does the decimal point go? (a) 0.136 (b) 0.00136 (c) 1.36 (d) 0.0136
7. 7.0.17 × 0.2 — where does the decimal point go? (a) 0.00034 (b) 0.0034 (c) 0.34 (d) 0.034
8. 8.0.67 × 0.4 — where does the decimal point go? (a) 2.68 (b) 0.00268 (c) 0.0268 (d) 0.268
9. 9.2.5 × 13 — where does the decimal point go? (a) 0.325 (b) 3.25 (c) 32.5 (d) 325
10. 10.0.86 × 3 — where does the decimal point go? (a) 25.8 (b) 0.0258 (c) 0.258 (d) 2.58
11. 11.4.4 × 4 — where does the decimal point go? (a) 1.76 (b) 17.6 (c) 0.176 (d) 176
12. 12.0.89 × 0.3 — where does the decimal point go? (a) 0.267 (b) 0.0267 (c) 2.67 (d) 0.00267
13. 13.2.6 × 7 — where does the decimal point go? (a) 1.82 (b) 0.182 (c) 18.2 (d) 182
14. 14.0.54 × 3.7 — where does the decimal point go? (a) 19.98 (b) 0.1998 (c) 0.01998 (d) 1.998
15. 15.5.7 × 2 — where does the decimal point go? (a) 11.4 (b) 0.114 (c) 1.14 (d) 114
16. 16.0.36 × 24 — where does the decimal point go? (a) 8.64 (b) 0.864 (c) 0.0864 (d) 86.4
17. 17.0.97 × 0.7 — where does the decimal point go? (a) 0.00679 (b) 0.0679 (c) 0.679 (d) 6.79
18. 18.4.1 × 49 — where does the decimal point go? (a) 2009 (b) 200.9 (c) 2.009 (d) 20.09
19. 19.0.89 × 24 — where does the decimal point go? (a) 21.36 (b) 213.6 (c) 0.2136 (d) 2.136
20. 20.0.27 × 9 — where does the decimal point go? (a) 24.3 (b) 2.43 (c) 0.0243 (d) 0.243
21. 21.0.21 × 1.4 — where does the decimal point go? (a) 2.94 (b) 0.00294 (c) 0.294 (d) 0.0294
22. 22.5.7 × 0.8 — where does the decimal point go? (a) 0.456 (b) 4.56 (c) 45.6 (d) 0.0456
23. 23.0.53 × 37 — where does the decimal point go? (a) 196.1 (b) 0.1961 (c) 1.961 (d) 19.61
24. 24.0.79 × 5 — where does the decimal point go? (a) 39.5 (b) 0.395 (c) 3.95 (d) 0.0395
25. 25.0.91 × 16 — where does the decimal point go? (a) 0.1456 (b) 14.56 (c) 1.456 (d) 145.6
26. 26.0.24 × 44 — where does the decimal point go? (a) 0.1056 (b) 105.6 (c) 1.056 (d) 10.56
27. 27.5.6 × 0.2 — where does the decimal point go? (a) 0.0112 (b) 1.12 (c) 0.112 (d) 11.2
28. 28.0.16 × 9 — where does the decimal point go? (a) 0.144 (b) 1.44 (c) 0.0144 (d) 14.4
29. 29.0.63 × 41 — where does the decimal point go? (a) 2.583 (b) 0.2583 (c) 25.83 (d) 258.3
30. 30.6.1 × 0.3 — where does the decimal point go? (a) 1.83 (b) 0.0183 (c) 0.183 (d) 18.3
31. 31.9.9 × 3 — where does the decimal point go? (a) 2.97 (b) 29.7 (c) 297 (d) 0.297
32. 32.9.3 × 2 — where does the decimal point go? (a) 0.186 (b) 18.6 (c) 1.86 (d) 186
33. 33.0.91 × 34 — where does the decimal point go? (a) 30.94 (b) 309.4 (c) 3.094 (d) 0.3094
34. 34.1.8 × 4.7 — where does the decimal point go? (a) 0.846 (b) 8.46 (c) 84.6 (d) 0.0846
35. 35.2.9 × 33 — where does the decimal point go? (a) 9.57 (b) 957 (c) 0.957 (d) 95.7
36. 36.7.8 × 3 — where does the decimal point go? (a) 23.4 (b) 0.234 (c) 234 (d) 2.34
37. 37.6.2 × 3.4 — where does the decimal point go? (a) 2.108 (b) 210.8 (c) 0.2108 (d) 21.08
38. 38.9.2 × 0.9 — where does the decimal point go? (a) 8.28 (b) 0.0828 (c) 0.828 (d) 82.8
39. 39.0.57 × 14 — where does the decimal point go? (a) 0.798 (b) 79.8 (c) 0.0798 (d) 7.98
40. 40.3.1 × 8 — where does the decimal point go? (a) 248 (b) 0.248 (c) 2.48 (d) 24.8

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