Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 829 · 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. 1.0.78 × 4 — where does the decimal point go? (a) 0.0312 (b) 3.12 (c) 31.2 (d) 0.312
2. 2.0.49 × 22 — where does the decimal point go? (a) 107.8 (b) 10.78 (c) 0.1078 (d) 1.078
3. 3.5.6 × 4.1 — where does the decimal point go? (a) 0.2296 (b) 229.6 (c) 2.296 (d) 22.96
4. 4.6.2 × 12 — where does the decimal point go? (a) 0.744 (b) 74.4 (c) 744 (d) 7.44
5. 5.0.86 × 42 — where does the decimal point go? (a) 0.3612 (b) 361.2 (c) 3.612 (d) 36.12
6. 6.6.6 × 4.1 — where does the decimal point go? (a) 2.706 (b) 0.2706 (c) 270.6 (d) 27.06
7. 7.7.6 × 0.9 — where does the decimal point go? (a) 0.0684 (b) 0.684 (c) 6.84 (d) 68.4
8. 8.9.7 × 8 — where does the decimal point go? (a) 77.6 (b) 7.76 (c) 776 (d) 0.776
9. 9.0.27 × 41 — where does the decimal point go? (a) 1.107 (b) 0.1107 (c) 110.7 (d) 11.07
10. 10.5.3 × 36 — where does the decimal point go? (a) 19.08 (b) 190.8 (c) 1.908 (d) 1908
11. 11.8.1 × 0.9 — where does the decimal point go? (a) 0.729 (b) 7.29 (c) 0.0729 (d) 72.9
12. 12.0.33 × 0.2 — where does the decimal point go? (a) 0.66 (b) 0.00066 (c) 0.066 (d) 0.0066
13. 13.0.53 × 9 — where does the decimal point go? (a) 0.0477 (b) 0.477 (c) 4.77 (d) 47.7
14. 14.0.19 × 1.7 — where does the decimal point go? (a) 0.00323 (b) 0.323 (c) 0.0323 (d) 3.23
15. 15.1.4 × 38 — where does the decimal point go? (a) 0.532 (b) 5.32 (c) 53.2 (d) 532
16. 16.3.1 × 0.2 — where does the decimal point go? (a) 0.62 (b) 0.062 (c) 6.2 (d) 0.0062
17. 17.0.62 × 37 — where does the decimal point go? (a) 2.294 (b) 229.4 (c) 22.94 (d) 0.2294
18. 18.1.6 × 12 — where does the decimal point go? (a) 1.92 (b) 0.192 (c) 19.2 (d) 192
19. 19.0.64 × 0.3 — where does the decimal point go? (a) 0.0192 (b) 0.192 (c) 0.00192 (d) 1.92
20. 20.1.7 × 0.9 — where does the decimal point go? (a) 0.153 (b) 15.3 (c) 0.0153 (d) 1.53
21. 21.9.9 × 4 — where does the decimal point go? (a) 396 (b) 39.6 (c) 0.396 (d) 3.96
22. 22.3.9 × 4.7 — where does the decimal point go? (a) 183.3 (b) 1.833 (c) 18.33 (d) 0.1833
23. 23.0.92 × 4.7 — where does the decimal point go? (a) 0.4324 (b) 4.324 (c) 43.24 (d) 0.04324
24. 24.6.8 × 24 — where does the decimal point go? (a) 16.32 (b) 163.2 (c) 1632 (d) 1.632
25. 25.9.5 × 47 — where does the decimal point go? (a) 4465 (b) 4.465 (c) 446.5 (d) 44.65
26. 26.9.6 × 3 — where does the decimal point go? (a) 288 (b) 28.8 (c) 2.88 (d) 0.288
27. 27.5.3 × 44 — where does the decimal point go? (a) 23.32 (b) 2.332 (c) 233.2 (d) 2332
28. 28.0.33 × 0.6 — where does the decimal point go? (a) 1.98 (b) 0.00198 (c) 0.198 (d) 0.0198
29. 29.3.3 × 0.6 — where does the decimal point go? (a) 0.0198 (b) 19.8 (c) 0.198 (d) 1.98
30. 30.0.12 × 0.3 — where does the decimal point go? (a) 0.036 (b) 0.0036 (c) 0.00036 (d) 0.36
31. 31.1.2 × 0.8 — where does the decimal point go? (a) 0.96 (b) 0.0096 (c) 9.6 (d) 0.096
32. 32.9.9 × 0.9 — where does the decimal point go? (a) 0.0891 (b) 0.891 (c) 8.91 (d) 89.1
33. 33.3.8 × 0.8 — where does the decimal point go? (a) 0.0304 (b) 0.304 (c) 3.04 (d) 30.4
34. 34.1.6 × 1.9 — where does the decimal point go? (a) 0.304 (b) 3.04 (c) 0.0304 (d) 30.4
35. 35.6.9 × 0.6 — where does the decimal point go? (a) 0.414 (b) 0.0414 (c) 4.14 (d) 41.4
36. 36.0.92 × 0.8 — where does the decimal point go? (a) 0.736 (b) 0.0736 (c) 7.36 (d) 0.00736
37. 37.6.6 × 7 — where does the decimal point go? (a) 46.2 (b) 4.62 (c) 462 (d) 0.462
38. 38.0.66 × 1.7 — where does the decimal point go? (a) 0.1122 (b) 11.22 (c) 0.01122 (d) 1.122
39. 39.1.6 × 3 — where does the decimal point go? (a) 0.048 (b) 48 (c) 4.8 (d) 0.48
40. 40.0.42 × 8 — where does the decimal point go? (a) 0.336 (b) 3.36 (c) 33.6 (d) 0.0336

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