Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 142 · 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. 1.0.57 × 7 — where does the decimal point go? (a) 39.9 (b) 0.399 (c) 0.0399 (d) 3.99
2. 2.0.36 × 7 — where does the decimal point go? (a) 0.252 (b) 25.2 (c) 0.0252 (d) 2.52
3. 3.7.6 × 3.6 — where does the decimal point go? (a) 2.736 (b) 0.2736 (c) 273.6 (d) 27.36
4. 4.1.3 × 36 — where does the decimal point go? (a) 0.468 (b) 468 (c) 46.8 (d) 4.68
5. 5.0.59 × 3 — where does the decimal point go? (a) 1.77 (b) 0.0177 (c) 17.7 (d) 0.177
6. 6.6.2 × 0.8 — where does the decimal point go? (a) 0.496 (b) 4.96 (c) 0.0496 (d) 49.6
7. 7.0.78 × 33 — where does the decimal point go? (a) 2.574 (b) 25.74 (c) 0.2574 (d) 257.4
8. 8.1.9 × 1.8 — where does the decimal point go? (a) 34.2 (b) 0.342 (c) 0.0342 (d) 3.42
9. 9.0.23 × 6 — where does the decimal point go? (a) 1.38 (b) 0.0138 (c) 13.8 (d) 0.138
10. 10.0.73 × 25 — where does the decimal point go? (a) 18.25 (b) 1.825 (c) 0.1825 (d) 182.5
11. 11.4.7 × 1.3 — where does the decimal point go? (a) 0.611 (b) 0.0611 (c) 61.1 (d) 6.11
12. 12.0.28 × 0.6 — where does the decimal point go? (a) 0.00168 (b) 0.168 (c) 1.68 (d) 0.0168
13. 13.8.6 × 1.4 — where does the decimal point go? (a) 1.204 (b) 0.1204 (c) 120.4 (d) 12.04
14. 14.0.56 × 2.9 — where does the decimal point go? (a) 16.24 (b) 0.01624 (c) 1.624 (d) 0.1624
15. 15.7.6 × 23 — where does the decimal point go? (a) 1.748 (b) 17.48 (c) 1748 (d) 174.8
16. 16.7.6 × 3.2 — where does the decimal point go? (a) 24.32 (b) 0.2432 (c) 2.432 (d) 243.2
17. 17.0.43 × 5 — where does the decimal point go? (a) 0.215 (b) 21.5 (c) 2.15 (d) 0.0215
18. 18.2.9 × 2.1 — where does the decimal point go? (a) 6.09 (b) 60.9 (c) 0.609 (d) 0.0609
19. 19.9.8 × 13 — where does the decimal point go? (a) 12.74 (b) 1.274 (c) 1274 (d) 127.4
20. 20.9.6 × 0.4 — where does the decimal point go? (a) 3.84 (b) 0.384 (c) 0.0384 (d) 38.4
21. 21.5.2 × 2 — where does the decimal point go? (a) 104 (b) 10.4 (c) 0.104 (d) 1.04
22. 22.0.26 × 6 — where does the decimal point go? (a) 0.156 (b) 0.0156 (c) 15.6 (d) 1.56
23. 23.2.8 × 0.3 — where does the decimal point go? (a) 0.084 (b) 0.0084 (c) 8.4 (d) 0.84
24. 24.0.18 × 4.2 — where does the decimal point go? (a) 0.756 (b) 0.0756 (c) 0.00756 (d) 7.56
25. 25.0.95 × 0.3 — where does the decimal point go? (a) 0.0285 (b) 0.285 (c) 0.00285 (d) 2.85
26. 26.4.1 × 8 — where does the decimal point go? (a) 32.8 (b) 3.28 (c) 0.328 (d) 328
27. 27.2.4 × 26 — where does the decimal point go? (a) 62.4 (b) 6.24 (c) 0.624 (d) 624
28. 28.0.25 × 0.7 — where does the decimal point go? (a) 0.00175 (b) 1.75 (c) 0.175 (d) 0.0175
29. 29.4.3 × 28 — where does the decimal point go? (a) 12.04 (b) 1.204 (c) 1204 (d) 120.4
30. 30.2.7 × 3 — where does the decimal point go? (a) 0.081 (b) 0.81 (c) 81 (d) 8.1
31. 31.2.4 × 8 — where does the decimal point go? (a) 192 (b) 0.192 (c) 1.92 (d) 19.2
32. 32.0.67 × 4 — where does the decimal point go? (a) 2.68 (b) 0.0268 (c) 0.268 (d) 26.8
33. 33.0.48 × 29 — where does the decimal point go? (a) 0.1392 (b) 1.392 (c) 13.92 (d) 139.2
34. 34.5.7 × 4 — where does the decimal point go? (a) 22.8 (b) 0.228 (c) 2.28 (d) 228
35. 35.0.52 × 4 — where does the decimal point go? (a) 0.208 (b) 20.8 (c) 0.0208 (d) 2.08
36. 36.1.2 × 0.8 — where does the decimal point go? (a) 9.6 (b) 0.96 (c) 0.0096 (d) 0.096
37. 37.3.3 × 1.5 — where does the decimal point go? (a) 0.0495 (b) 0.495 (c) 49.5 (d) 4.95
38. 38.0.16 × 0.6 — where does the decimal point go? (a) 0.96 (b) 0.00096 (c) 0.0096 (d) 0.096
39. 39.0.58 × 34 — where does the decimal point go? (a) 1.972 (b) 197.2 (c) 19.72 (d) 0.1972
40. 40.0.86 × 38 — where does the decimal point go? (a) 0.3268 (b) 32.68 (c) 3.268 (d) 326.8

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