Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 963 · 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. 1.0.99 × 4 — where does the decimal point go? (a) 0.396 (b) 0.0396 (c) 3.96 (d) 39.6
2. 2.1.3 × 2.7 — where does the decimal point go? (a) 0.351 (b) 3.51 (c) 0.0351 (d) 35.1
3. 3.0.92 × 4.3 — where does the decimal point go? (a) 39.56 (b) 0.3956 (c) 0.03956 (d) 3.956
4. 4.3.2 × 3 — where does the decimal point go? (a) 0.96 (b) 9.6 (c) 0.096 (d) 96
5. 5.3.7 × 17 — where does the decimal point go? (a) 62.9 (b) 6.29 (c) 0.629 (d) 629
6. 6.9.9 × 4.8 — where does the decimal point go? (a) 47.52 (b) 0.4752 (c) 475.2 (d) 4.752
7. 7.7.6 × 2 — where does the decimal point go? (a) 0.152 (b) 15.2 (c) 1.52 (d) 152
8. 8.4.8 × 7 — where does the decimal point go? (a) 3.36 (b) 33.6 (c) 336 (d) 0.336
9. 9.1.2 × 0.6 — where does the decimal point go? (a) 0.72 (b) 0.072 (c) 7.2 (d) 0.0072
10. 10.0.38 × 0.4 — where does the decimal point go? (a) 0.00152 (b) 0.0152 (c) 0.152 (d) 1.52
11. 11.0.24 × 0.4 — where does the decimal point go? (a) 0.0096 (b) 0.096 (c) 0.96 (d) 0.00096
12. 12.0.49 × 0.9 — where does the decimal point go? (a) 0.00441 (b) 0.0441 (c) 4.41 (d) 0.441
13. 13.9.6 × 0.9 — where does the decimal point go? (a) 0.0864 (b) 0.864 (c) 86.4 (d) 8.64
14. 14.0.21 × 5 — where does the decimal point go? (a) 0.105 (b) 0.0105 (c) 1.05 (d) 10.5
15. 15.5.4 × 1.9 — where does the decimal point go? (a) 1.026 (b) 10.26 (c) 0.1026 (d) 102.6
16. 16.0.89 × 1.9 — where does the decimal point go? (a) 0.01691 (b) 16.91 (c) 1.691 (d) 0.1691
17. 17.9.1 × 6 — where does the decimal point go? (a) 0.546 (b) 54.6 (c) 5.46 (d) 546
18. 18.0.23 × 0.6 — where does the decimal point go? (a) 0.138 (b) 0.00138 (c) 0.0138 (d) 1.38
19. 19.7.2 × 0.4 — where does the decimal point go? (a) 2.88 (b) 0.288 (c) 28.8 (d) 0.0288
20. 20.4.5 × 9 — where does the decimal point go? (a) 4.05 (b) 40.5 (c) 0.405 (d) 405
21. 21.9.3 × 2.8 — where does the decimal point go? (a) 260.4 (b) 0.2604 (c) 2.604 (d) 26.04
22. 22.0.25 × 39 — where does the decimal point go? (a) 9.75 (b) 97.5 (c) 0.975 (d) 0.0975
23. 23.0.33 × 0.3 — where does the decimal point go? (a) 0.099 (b) 0.99 (c) 0.00099 (d) 0.0099
24. 24.3.9 × 5 — where does the decimal point go? (a) 195 (b) 19.5 (c) 1.95 (d) 0.195
25. 25.0.76 × 4 — where does the decimal point go? (a) 30.4 (b) 0.304 (c) 0.0304 (d) 3.04
26. 26.0.14 × 2 — where does the decimal point go? (a) 0.28 (b) 0.028 (c) 0.0028 (d) 2.8
27. 27.7.3 × 0.4 — where does the decimal point go? (a) 2.92 (b) 0.0292 (c) 0.292 (d) 29.2
28. 28.1.9 × 24 — where does the decimal point go? (a) 0.456 (b) 45.6 (c) 456 (d) 4.56
29. 29.8.2 × 17 — where does the decimal point go? (a) 1394 (b) 1.394 (c) 139.4 (d) 13.94
30. 30.6.2 × 2 — where does the decimal point go? (a) 0.124 (b) 12.4 (c) 124 (d) 1.24
31. 31.0.31 × 11 — where does the decimal point go? (a) 3.41 (b) 34.1 (c) 0.0341 (d) 0.341
32. 32.2.7 × 44 — where does the decimal point go? (a) 118.8 (b) 1.188 (c) 11.88 (d) 1188
33. 33.0.22 × 3 — where does the decimal point go? (a) 0.0066 (b) 0.66 (c) 6.6 (d) 0.066
34. 34.6.8 × 0.8 — where does the decimal point go? (a) 5.44 (b) 54.4 (c) 0.0544 (d) 0.544
35. 35.0.39 × 8 — where does the decimal point go? (a) 31.2 (b) 0.312 (c) 0.0312 (d) 3.12
36. 36.8.7 × 0.8 — where does the decimal point go? (a) 0.0696 (b) 6.96 (c) 69.6 (d) 0.696
37. 37.6.2 × 3.9 — where does the decimal point go? (a) 0.2418 (b) 241.8 (c) 24.18 (d) 2.418
38. 38.0.86 × 0.4 — where does the decimal point go? (a) 0.00344 (b) 0.344 (c) 3.44 (d) 0.0344
39. 39.3.3 × 1.5 — where does the decimal point go? (a) 0.495 (b) 49.5 (c) 4.95 (d) 0.0495
40. 40.0.55 × 7 — where does the decimal point go? (a) 38.5 (b) 3.85 (c) 0.0385 (d) 0.385

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