Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 24 · 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. 1.0.12 × 2.3 — where does the decimal point go? (a) 2.76 (b) 0.00276 (c) 0.276 (d) 0.0276
2. 2.3.5 × 4.9 — where does the decimal point go? (a) 171.5 (b) 1.715 (c) 0.1715 (d) 17.15
3. 3.0.23 × 7 — where does the decimal point go? (a) 16.1 (b) 1.61 (c) 0.161 (d) 0.0161
4. 4.3.2 × 7 — where does the decimal point go? (a) 22.4 (b) 224 (c) 2.24 (d) 0.224
5. 5.4.6 × 0.9 — where does the decimal point go? (a) 41.4 (b) 0.0414 (c) 4.14 (d) 0.414
6. 6.3.1 × 5 — where does the decimal point go? (a) 155 (b) 0.155 (c) 15.5 (d) 1.55
7. 7.7.3 × 0.9 — where does the decimal point go? (a) 0.657 (b) 65.7 (c) 0.0657 (d) 6.57
8. 8.9.9 × 2 — where does the decimal point go? (a) 19.8 (b) 1.98 (c) 0.198 (d) 198
9. 9.0.32 × 18 — where does the decimal point go? (a) 0.576 (b) 5.76 (c) 57.6 (d) 0.0576
10. 10.5.8 × 2.6 — where does the decimal point go? (a) 15.08 (b) 1.508 (c) 150.8 (d) 0.1508
11. 11.9.1 × 2.9 — where does the decimal point go? (a) 0.2639 (b) 263.9 (c) 2.639 (d) 26.39
12. 12.0.34 × 0.6 — where does the decimal point go? (a) 0.204 (b) 0.00204 (c) 2.04 (d) 0.0204
13. 13.0.53 × 2 — where does the decimal point go? (a) 1.06 (b) 0.0106 (c) 10.6 (d) 0.106
14. 14.0.23 × 0.2 — where does the decimal point go? (a) 0.00046 (b) 0.0046 (c) 0.46 (d) 0.046
15. 15.0.52 × 0.3 — where does the decimal point go? (a) 0.00156 (b) 0.0156 (c) 0.156 (d) 1.56
16. 16.8.8 × 3.7 — where does the decimal point go? (a) 32.56 (b) 0.3256 (c) 325.6 (d) 3.256
17. 17.0.67 × 0.3 — where does the decimal point go? (a) 0.0201 (b) 0.00201 (c) 0.201 (d) 2.01
18. 18.0.31 × 2 — where does the decimal point go? (a) 6.2 (b) 0.62 (c) 0.0062 (d) 0.062
19. 19.0.12 × 0.8 — where does the decimal point go? (a) 0.00096 (b) 0.0096 (c) 0.096 (d) 0.96
20. 20.8.9 × 2.9 — where does the decimal point go? (a) 25.81 (b) 258.1 (c) 0.2581 (d) 2.581
21. 21.0.26 × 0.2 — where does the decimal point go? (a) 0.00052 (b) 0.052 (c) 0.52 (d) 0.0052
22. 22.0.79 × 0.7 — where does the decimal point go? (a) 0.553 (b) 0.00553 (c) 0.0553 (d) 5.53
23. 23.0.24 × 0.2 — where does the decimal point go? (a) 0.048 (b) 0.00048 (c) 0.48 (d) 0.0048
24. 24.0.98 × 26 — where does the decimal point go? (a) 2.548 (b) 0.2548 (c) 254.8 (d) 25.48
25. 25.0.65 × 0.3 — where does the decimal point go? (a) 0.00195 (b) 0.195 (c) 0.0195 (d) 1.95
26. 26.3.7 × 8 — where does the decimal point go? (a) 29.6 (b) 296 (c) 0.296 (d) 2.96
27. 27.1.9 × 2.7 — where does the decimal point go? (a) 0.0513 (b) 5.13 (c) 51.3 (d) 0.513
28. 28.7.3 × 4.9 — where does the decimal point go? (a) 35.77 (b) 0.3577 (c) 357.7 (d) 3.577
29. 29.2.3 × 3.4 — where does the decimal point go? (a) 0.0782 (b) 7.82 (c) 0.782 (d) 78.2
30. 30.6.1 × 3 — where does the decimal point go? (a) 18.3 (b) 0.183 (c) 1.83 (d) 183
31. 31.9.2 × 0.2 — where does the decimal point go? (a) 0.0184 (b) 0.184 (c) 18.4 (d) 1.84
32. 32.9.4 × 16 — where does the decimal point go? (a) 1.504 (b) 1504 (c) 15.04 (d) 150.4
33. 33.1.7 × 37 — where does the decimal point go? (a) 62.9 (b) 6.29 (c) 0.629 (d) 629
34. 34.0.83 × 1.2 — where does the decimal point go? (a) 0.996 (b) 9.96 (c) 0.00996 (d) 0.0996
35. 35.9.3 × 8 — where does the decimal point go? (a) 0.744 (b) 7.44 (c) 744 (d) 74.4
36. 36.7.2 × 1.3 — where does the decimal point go? (a) 9.36 (b) 93.6 (c) 0.0936 (d) 0.936
37. 37.1.3 × 2 — where does the decimal point go? (a) 2.6 (b) 26 (c) 0.26 (d) 0.026
38. 38.1.9 × 43 — where does the decimal point go? (a) 817 (b) 0.817 (c) 81.7 (d) 8.17
39. 39.0.81 × 9 — where does the decimal point go? (a) 7.29 (b) 0.0729 (c) 0.729 (d) 72.9
40. 40.5.7 × 39 — where does the decimal point go? (a) 2.223 (b) 222.3 (c) 2223 (d) 22.23

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