Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 6 · 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. 1.0.39 × 0.3 — where does the decimal point go? (a) 0.0117 (b) 0.117 (c) 0.00117 (d) 1.17
2. 2.1.7 × 19 — where does the decimal point go? (a) 32.3 (b) 323 (c) 0.323 (d) 3.23
3. 3.2.7 × 0.6 — where does the decimal point go? (a) 16.2 (b) 0.162 (c) 1.62 (d) 0.0162
4. 4.4.8 × 19 — where does the decimal point go? (a) 0.912 (b) 9.12 (c) 91.2 (d) 912
5. 5.6.5 × 3.1 — where does the decimal point go? (a) 0.2015 (b) 2.015 (c) 20.15 (d) 201.5
6. 6.2.3 × 16 — where does the decimal point go? (a) 3.68 (b) 0.368 (c) 36.8 (d) 368
7. 7.7.6 × 0.8 — where does the decimal point go? (a) 0.0608 (b) 0.608 (c) 6.08 (d) 60.8
8. 8.0.32 × 0.6 — where does the decimal point go? (a) 0.0192 (b) 0.00192 (c) 0.192 (d) 1.92
9. 9.2.2 × 3.8 — where does the decimal point go? (a) 8.36 (b) 83.6 (c) 0.0836 (d) 0.836
10. 10.4.3 × 3 — where does the decimal point go? (a) 12.9 (b) 1.29 (c) 129 (d) 0.129
11. 11.9.9 × 25 — where does the decimal point go? (a) 2475 (b) 2.475 (c) 24.75 (d) 247.5
12. 12.7.7 × 4 — where does the decimal point go? (a) 30.8 (b) 0.308 (c) 308 (d) 3.08
13. 13.3.2 × 0.9 — where does the decimal point go? (a) 28.8 (b) 0.288 (c) 2.88 (d) 0.0288
14. 14.0.91 × 0.7 — where does the decimal point go? (a) 0.00637 (b) 6.37 (c) 0.0637 (d) 0.637
15. 15.0.41 × 4 — where does the decimal point go? (a) 1.64 (b) 0.0164 (c) 16.4 (d) 0.164
16. 16.2.8 × 13 — where does the decimal point go? (a) 364 (b) 0.364 (c) 36.4 (d) 3.64
17. 17.0.69 × 35 — where does the decimal point go? (a) 2.415 (b) 0.2415 (c) 241.5 (d) 24.15
18. 18.0.67 × 36 — where does the decimal point go? (a) 0.2412 (b) 2.412 (c) 241.2 (d) 24.12
19. 19.0.69 × 3.1 — where does the decimal point go? (a) 0.2139 (b) 0.02139 (c) 21.39 (d) 2.139
20. 20.3.3 × 2.8 — where does the decimal point go? (a) 92.4 (b) 0.0924 (c) 9.24 (d) 0.924
21. 21.9.8 × 0.4 — where does the decimal point go? (a) 0.392 (b) 3.92 (c) 0.0392 (d) 39.2
22. 22.5.4 × 0.9 — where does the decimal point go? (a) 0.486 (b) 0.0486 (c) 4.86 (d) 48.6
23. 23.6.3 × 1.4 — where does the decimal point go? (a) 0.0882 (b) 88.2 (c) 8.82 (d) 0.882
24. 24.0.23 × 4.2 — where does the decimal point go? (a) 0.0966 (b) 0.00966 (c) 9.66 (d) 0.966
25. 25.7.6 × 1.9 — where does the decimal point go? (a) 14.44 (b) 1.444 (c) 0.1444 (d) 144.4
26. 26.3.1 × 25 — where does the decimal point go? (a) 77.5 (b) 775 (c) 0.775 (d) 7.75
27. 27.0.77 × 0.4 — where does the decimal point go? (a) 0.308 (b) 0.00308 (c) 3.08 (d) 0.0308
28. 28.0.49 × 3.8 — where does the decimal point go? (a) 0.01862 (b) 1.862 (c) 18.62 (d) 0.1862
29. 29.4.8 × 3 — where does the decimal point go? (a) 14.4 (b) 1.44 (c) 0.144 (d) 144
30. 30.0.18 × 13 — where does the decimal point go? (a) 0.0234 (b) 2.34 (c) 23.4 (d) 0.234
31. 31.0.42 × 0.7 — where does the decimal point go? (a) 0.00294 (b) 2.94 (c) 0.294 (d) 0.0294
32. 32.0.33 × 4 — where does the decimal point go? (a) 0.0132 (b) 0.132 (c) 13.2 (d) 1.32
33. 33.7.1 × 2 — where does the decimal point go? (a) 0.142 (b) 1.42 (c) 14.2 (d) 142
34. 34.5.6 × 0.7 — where does the decimal point go? (a) 3.92 (b) 0.392 (c) 39.2 (d) 0.0392
35. 35.2.3 × 6 — where does the decimal point go? (a) 13.8 (b) 138 (c) 0.138 (d) 1.38
36. 36.2.7 × 3.3 — where does the decimal point go? (a) 8.91 (b) 0.891 (c) 0.0891 (d) 89.1
37. 37.4.8 × 4.9 — where does the decimal point go? (a) 2.352 (b) 0.2352 (c) 23.52 (d) 235.2
38. 38.0.34 × 1.6 — where does the decimal point go? (a) 0.544 (b) 0.00544 (c) 0.0544 (d) 5.44
39. 39.7.7 × 8 — where does the decimal point go? (a) 61.6 (b) 0.616 (c) 6.16 (d) 616
40. 40.0.23 × 0.8 — where does the decimal point go? (a) 0.00184 (b) 0.0184 (c) 1.84 (d) 0.184

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