Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 273 · 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. 1.5.3 × 0.2 — where does the decimal point go? (a) 0.106 (b) 10.6 (c) 0.0106 (d) 1.06
2. 2.3.1 × 41 — where does the decimal point go? (a) 1.271 (b) 12.71 (c) 1271 (d) 127.1
3. 3.2.3 × 2.1 — where does the decimal point go? (a) 48.3 (b) 4.83 (c) 0.483 (d) 0.0483
4. 4.4.3 × 8 — where does the decimal point go? (a) 344 (b) 3.44 (c) 0.344 (d) 34.4
5. 5.3.3 × 0.5 — where does the decimal point go? (a) 16.5 (b) 0.0165 (c) 0.165 (d) 1.65
6. 6.0.69 × 0.6 — where does the decimal point go? (a) 0.414 (b) 0.0414 (c) 0.00414 (d) 4.14
7. 7.9.4 × 31 — where does the decimal point go? (a) 291.4 (b) 29.14 (c) 2.914 (d) 2914
8. 8.0.97 × 5 — where does the decimal point go? (a) 0.0485 (b) 48.5 (c) 0.485 (d) 4.85
9. 9.5.9 × 4 — where does the decimal point go? (a) 2.36 (b) 236 (c) 0.236 (d) 23.6
10. 10.0.83 × 27 — where does the decimal point go? (a) 2.241 (b) 22.41 (c) 0.2241 (d) 224.1
11. 11.5.2 × 2.7 — where does the decimal point go? (a) 14.04 (b) 140.4 (c) 0.1404 (d) 1.404
12. 12.2.9 × 25 — where does the decimal point go? (a) 0.725 (b) 725 (c) 7.25 (d) 72.5
13. 13.3.5 × 43 — where does the decimal point go? (a) 1.505 (b) 150.5 (c) 15.05 (d) 1505
14. 14.0.74 × 4.3 — where does the decimal point go? (a) 31.82 (b) 3.182 (c) 0.3182 (d) 0.03182
15. 15.4.7 × 1.7 — where does the decimal point go? (a) 0.799 (b) 0.0799 (c) 79.9 (d) 7.99
16. 16.1.7 × 0.6 — where does the decimal point go? (a) 10.2 (b) 0.0102 (c) 1.02 (d) 0.102
17. 17.5.7 × 2.1 — where does the decimal point go? (a) 0.1197 (b) 11.97 (c) 119.7 (d) 1.197
18. 18.0.86 × 4.9 — where does the decimal point go? (a) 0.4214 (b) 42.14 (c) 0.04214 (d) 4.214
19. 19.2.8 × 2.2 — where does the decimal point go? (a) 6.16 (b) 61.6 (c) 0.0616 (d) 0.616
20. 20.0.17 × 4 — where does the decimal point go? (a) 0.68 (b) 6.8 (c) 0.068 (d) 0.0068
21. 21.5.4 × 26 — where does the decimal point go? (a) 140.4 (b) 14.04 (c) 1.404 (d) 1404
22. 22.0.84 × 0.7 — where does the decimal point go? (a) 0.588 (b) 0.0588 (c) 0.00588 (d) 5.88
23. 23.7.2 × 9 — where does the decimal point go? (a) 648 (b) 0.648 (c) 64.8 (d) 6.48
24. 24.0.81 × 1.7 — where does the decimal point go? (a) 0.1377 (b) 0.01377 (c) 1.377 (d) 13.77
25. 25.4.8 × 1.9 — where does the decimal point go? (a) 0.912 (b) 91.2 (c) 0.0912 (d) 9.12
26. 26.0.29 × 35 — where does the decimal point go? (a) 1.015 (b) 101.5 (c) 10.15 (d) 0.1015
27. 27.8.8 × 41 — where does the decimal point go? (a) 3.608 (b) 360.8 (c) 3608 (d) 36.08
28. 28.0.89 × 37 — where does the decimal point go? (a) 0.3293 (b) 329.3 (c) 3.293 (d) 32.93
29. 29.5.7 × 1.9 — where does the decimal point go? (a) 0.1083 (b) 1.083 (c) 108.3 (d) 10.83
30. 30.0.73 × 3.2 — where does the decimal point go? (a) 23.36 (b) 2.336 (c) 0.2336 (d) 0.02336
31. 31.0.51 × 8 — where does the decimal point go? (a) 0.0408 (b) 0.408 (c) 4.08 (d) 40.8
32. 32.4.1 × 3 — where does the decimal point go? (a) 0.123 (b) 123 (c) 1.23 (d) 12.3
33. 33.0.23 × 9 — where does the decimal point go? (a) 0.0207 (b) 2.07 (c) 0.207 (d) 20.7
34. 34.3.4 × 9 — where does the decimal point go? (a) 30.6 (b) 3.06 (c) 306 (d) 0.306
35. 35.3.1 × 0.8 — where does the decimal point go? (a) 24.8 (b) 0.0248 (c) 0.248 (d) 2.48
36. 36.1.4 × 9 — where does the decimal point go? (a) 1.26 (b) 12.6 (c) 126 (d) 0.126
37. 37.2.7 × 0.7 — where does the decimal point go? (a) 0.189 (b) 0.0189 (c) 18.9 (d) 1.89
38. 38.0.18 × 0.4 — where does the decimal point go? (a) 0.72 (b) 0.0072 (c) 0.072 (d) 0.00072
39. 39.0.41 × 0.2 — where does the decimal point go? (a) 0.082 (b) 0.00082 (c) 0.0082 (d) 0.82
40. 40.0.22 × 41 — where does the decimal point go? (a) 9.02 (b) 0.0902 (c) 90.2 (d) 0.902

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