Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 233 · 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. 1.8.9 × 2.8 — where does the decimal point go? (a) 24.92 (b) 249.2 (c) 0.2492 (d) 2.492
2. 2.5.2 × 8 — where does the decimal point go? (a) 4.16 (b) 416 (c) 41.6 (d) 0.416
3. 3.0.52 × 0.7 — where does the decimal point go? (a) 0.364 (b) 0.00364 (c) 3.64 (d) 0.0364
4. 4.0.49 × 0.2 — where does the decimal point go? (a) 0.98 (b) 0.0098 (c) 0.098 (d) 0.00098
5. 5.7.9 × 18 — where does the decimal point go? (a) 14.22 (b) 1.422 (c) 1422 (d) 142.2
6. 6.0.83 × 15 — where does the decimal point go? (a) 12.45 (b) 0.1245 (c) 124.5 (d) 1.245
7. 7.0.99 × 1.8 — where does the decimal point go? (a) 0.1782 (b) 1.782 (c) 0.01782 (d) 17.82
8. 8.0.34 × 8 — where does the decimal point go? (a) 0.272 (b) 0.0272 (c) 27.2 (d) 2.72
9. 9.0.42 × 16 — where does the decimal point go? (a) 0.672 (b) 6.72 (c) 67.2 (d) 0.0672
10. 10.4.4 × 29 — where does the decimal point go? (a) 1276 (b) 127.6 (c) 1.276 (d) 12.76
11. 11.6.2 × 33 — where does the decimal point go? (a) 204.6 (b) 2046 (c) 20.46 (d) 2.046
12. 12.4.9 × 9 — where does the decimal point go? (a) 441 (b) 44.1 (c) 4.41 (d) 0.441
13. 13.0.95 × 0.5 — where does the decimal point go? (a) 4.75 (b) 0.00475 (c) 0.0475 (d) 0.475
14. 14.0.84 × 0.4 — where does the decimal point go? (a) 0.336 (b) 3.36 (c) 0.00336 (d) 0.0336
15. 15.0.48 × 3.8 — where does the decimal point go? (a) 0.01824 (b) 1.824 (c) 18.24 (d) 0.1824
16. 16.0.26 × 2 — where does the decimal point go? (a) 5.2 (b) 0.052 (c) 0.0052 (d) 0.52
17. 17.8.6 × 43 — where does the decimal point go? (a) 369.8 (b) 36.98 (c) 3698 (d) 3.698
18. 18.3.7 × 4 — where does the decimal point go? (a) 0.148 (b) 148 (c) 1.48 (d) 14.8
19. 19.0.94 × 2 — where does the decimal point go? (a) 0.0188 (b) 18.8 (c) 1.88 (d) 0.188
20. 20.5.3 × 49 — where does the decimal point go? (a) 25.97 (b) 259.7 (c) 2597 (d) 2.597
21. 21.6.2 × 38 — where does the decimal point go? (a) 23.56 (b) 2356 (c) 235.6 (d) 2.356
22. 22.0.84 × 8 — where does the decimal point go? (a) 0.672 (b) 6.72 (c) 0.0672 (d) 67.2
23. 23.6.9 × 1.9 — where does the decimal point go? (a) 131.1 (b) 13.11 (c) 0.1311 (d) 1.311
24. 24.2.9 × 9 — where does the decimal point go? (a) 2.61 (b) 26.1 (c) 261 (d) 0.261
25. 25.0.78 × 0.3 — where does the decimal point go? (a) 0.234 (b) 0.00234 (c) 2.34 (d) 0.0234
26. 26.0.89 × 3 — where does the decimal point go? (a) 2.67 (b) 26.7 (c) 0.0267 (d) 0.267
27. 27.1.6 × 4.7 — where does the decimal point go? (a) 0.752 (b) 75.2 (c) 0.0752 (d) 7.52
28. 28.9.4 × 3.1 — where does the decimal point go? (a) 29.14 (b) 0.2914 (c) 2.914 (d) 291.4
29. 29.9.2 × 1.3 — where does the decimal point go? (a) 11.96 (b) 1.196 (c) 119.6 (d) 0.1196
30. 30.0.32 × 4.2 — where does the decimal point go? (a) 0.01344 (b) 13.44 (c) 0.1344 (d) 1.344
31. 31.7.7 × 43 — where does the decimal point go? (a) 331.1 (b) 3.311 (c) 33.11 (d) 3311
32. 32.8.6 × 36 — where does the decimal point go? (a) 309.6 (b) 30.96 (c) 3096 (d) 3.096
33. 33.0.79 × 1.1 — where does the decimal point go? (a) 8.69 (b) 0.0869 (c) 0.869 (d) 0.00869
34. 34.3.8 × 3 — where does the decimal point go? (a) 11.4 (b) 1.14 (c) 0.114 (d) 114
35. 35.1.7 × 0.2 — where does the decimal point go? (a) 3.4 (b) 0.034 (c) 0.34 (d) 0.0034
36. 36.8.7 × 38 — where does the decimal point go? (a) 3306 (b) 33.06 (c) 330.6 (d) 3.306
37. 37.0.32 × 28 — where does the decimal point go? (a) 89.6 (b) 0.0896 (c) 0.896 (d) 8.96
38. 38.0.29 × 2 — where does the decimal point go? (a) 0.0058 (b) 0.58 (c) 0.058 (d) 5.8
39. 39.6.7 × 38 — where does the decimal point go? (a) 2546 (b) 25.46 (c) 254.6 (d) 2.546
40. 40.0.64 × 14 — where does the decimal point go? (a) 8.96 (b) 0.896 (c) 89.6 (d) 0.0896

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