Question

What decimal tells how much is shaded? It's shaded 4 out of 10.

The answers are either:
1. 1.04
2. 0.14
3. 1.4
4. 10.4

Answer 1

To find 4 out of 10 shaded, we can turn this into a decimal by simply dividing 4 by 10. A rule that many people use is that for every 0 in a 1 with a number of 0’s after it (note that it cannot contain any other numbers), you move the decimal place one to the left. For this, we have 4=4.0 as the decimal is always to the right of the integer. Next, we move the decimal one spot to the left, making our new decimal (and the final answer) 0.40. Unfortunately, however, this is not one of the answers that are possible - I would suggest making sure that 4 out of 10 are indeed shaded (are there 10 out of 10 shaded on the side?) and asking your teacher why 0.4 is not one of the answers.

Feel free to ask further questions!