Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 212 · 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. 1.1.3 × 31 — where does the decimal point go? (a) 403 (b) 40.3 (c) 4.03 (d) 0.403
2. 2.0.73 × 0.3 — where does the decimal point go? (a) 0.0219 (b) 0.219 (c) 0.00219 (d) 2.19
3. 3.8.2 × 8 — where does the decimal point go? (a) 0.656 (b) 6.56 (c) 65.6 (d) 656
4. 4.8.1 × 3.6 — where does the decimal point go? (a) 29.16 (b) 291.6 (c) 0.2916 (d) 2.916
5. 5.3.5 × 43 — where does the decimal point go? (a) 15.05 (b) 1.505 (c) 1505 (d) 150.5
6. 6.0.13 × 4.5 — where does the decimal point go? (a) 0.585 (b) 0.0585 (c) 0.00585 (d) 5.85
7. 7.6.7 × 18 — where does the decimal point go? (a) 120.6 (b) 1206 (c) 1.206 (d) 12.06
8. 8.0.82 × 1.3 — where does the decimal point go? (a) 10.66 (b) 1.066 (c) 0.1066 (d) 0.01066
9. 9.5.2 × 7 — where does the decimal point go? (a) 364 (b) 3.64 (c) 36.4 (d) 0.364
10. 10.9.7 × 0.2 — where does the decimal point go? (a) 19.4 (b) 0.194 (c) 0.0194 (d) 1.94
11. 11.0.59 × 31 — where does the decimal point go? (a) 0.1829 (b) 182.9 (c) 1.829 (d) 18.29
12. 12.7.3 × 0.9 — where does the decimal point go? (a) 0.0657 (b) 0.657 (c) 65.7 (d) 6.57
13. 13.0.59 × 4 — where does the decimal point go? (a) 0.0236 (b) 23.6 (c) 2.36 (d) 0.236
14. 14.0.61 × 9 — where does the decimal point go? (a) 0.0549 (b) 0.549 (c) 54.9 (d) 5.49
15. 15.2.9 × 0.9 — where does the decimal point go? (a) 26.1 (b) 2.61 (c) 0.261 (d) 0.0261
16. 16.9.7 × 9 — where does the decimal point go? (a) 87.3 (b) 873 (c) 0.873 (d) 8.73
17. 17.6.9 × 2.2 — where does the decimal point go? (a) 15.18 (b) 0.1518 (c) 1.518 (d) 151.8
18. 18.8.3 × 0.2 — where does the decimal point go? (a) 0.166 (b) 16.6 (c) 0.0166 (d) 1.66
19. 19.8.5 × 0.9 — where does the decimal point go? (a) 0.0765 (b) 0.765 (c) 7.65 (d) 76.5
20. 20.9.2 × 6 — where does the decimal point go? (a) 552 (b) 5.52 (c) 55.2 (d) 0.552
21. 21.0.29 × 0.7 — where does the decimal point go? (a) 2.03 (b) 0.00203 (c) 0.203 (d) 0.0203
22. 22.4.5 × 0.9 — where does the decimal point go? (a) 4.05 (b) 0.405 (c) 0.0405 (d) 40.5
23. 23.0.26 × 18 — where does the decimal point go? (a) 0.468 (b) 4.68 (c) 46.8 (d) 0.0468
24. 24.0.85 × 3 — where does the decimal point go? (a) 0.255 (b) 2.55 (c) 25.5 (d) 0.0255
25. 25.2.7 × 0.3 — where does the decimal point go? (a) 0.0081 (b) 0.81 (c) 0.081 (d) 8.1
26. 26.3.7 × 33 — where does the decimal point go? (a) 1.221 (b) 122.1 (c) 12.21 (d) 1221
27. 27.1.3 × 13 — where does the decimal point go? (a) 169 (b) 16.9 (c) 0.169 (d) 1.69
28. 28.1.4 × 41 — where does the decimal point go? (a) 5.74 (b) 0.574 (c) 574 (d) 57.4
29. 29.6.8 × 7 — where does the decimal point go? (a) 0.476 (b) 47.6 (c) 476 (d) 4.76
30. 30.0.17 × 0.4 — where does the decimal point go? (a) 0.068 (b) 0.68 (c) 0.0068 (d) 0.00068
31. 31.0.42 × 4.3 — where does the decimal point go? (a) 0.01806 (b) 18.06 (c) 0.1806 (d) 1.806
32. 32.0.78 × 12 — where does the decimal point go? (a) 93.6 (b) 0.936 (c) 9.36 (d) 0.0936
33. 33.4.3 × 1.5 — where does the decimal point go? (a) 6.45 (b) 0.0645 (c) 64.5 (d) 0.645
34. 34.0.94 × 9 — where does the decimal point go? (a) 8.46 (b) 0.846 (c) 0.0846 (d) 84.6
35. 35.0.45 × 3.5 — where does the decimal point go? (a) 1.575 (b) 15.75 (c) 0.01575 (d) 0.1575
36. 36.5.7 × 0.7 — where does the decimal point go? (a) 3.99 (b) 0.0399 (c) 39.9 (d) 0.399
37. 37.5.9 × 7 — where does the decimal point go? (a) 413 (b) 4.13 (c) 0.413 (d) 41.3
38. 38.0.24 × 3.1 — where does the decimal point go? (a) 0.00744 (b) 0.0744 (c) 7.44 (d) 0.744
39. 39.0.56 × 49 — where does the decimal point go? (a) 0.2744 (b) 2.744 (c) 27.44 (d) 274.4
40. 40.7.8 × 8 — where does the decimal point go? (a) 62.4 (b) 0.624 (c) 624 (d) 6.24

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