# Some questions about dividing decimals?

• Jul 16th 2012, 02:03 PM
Subliminalmessage
I was dividing decimals just then on a maths website and I got 7 wrong, I'll put the link to the questions below.

Math is Fun Worksheet

The questions I got wrong were, 1,8,9,10,11,12,13. Now I looked back at these questions and I can see why they had the answers they had. For example, the first question.

2.0/1.6, I got an answer of 1.25 however the answer is 0.8, looking back at the question it is obvious to realize that they just asked how many times does 2 go into 16. However I thought the 2.0 would become Twenty along with the 1.6 becoming Sixteen? Why doesn't it, why does it remain as a 2.0?

Also I thought the sum had to be 2.0/1.6 because 2.0 is the bigger number but the way they answered it, did they not make it 1.6/2.0? Why is this?

Thank you if you read through this, I hope you can help me out.
• Jul 16th 2012, 02:24 PM
TotteryManx
Re: Some questions about dividing decimals?
2.0 Doesn't remain 2.0. You have the right idea. 2.0 has to be converted into a whole number, which requires moving the decimal 1 spot to the right. You have to do the same to 1.6 as well. 20 doesn't go into 16 so that is 0. In order to get a answer another 0 has to be attached to the 16, so it would become 160/20 which is 8 times. Move the decimal straight up and the answer is 0.8.

I'm not a math teacher or anything so I don't know how to explain it with proper terms. Sorry.
• Jul 16th 2012, 03:51 PM
richard1234
Re: Some questions about dividing decimals?
Quote:

Originally Posted by Subliminalmessage
Also I thought the sum had to be 2.0/1.6 because 2.0 is the bigger number but the way they answered it, did they not make it 1.6/2.0? Why is this?

Who said that the dividend must be larger than the divisor?
• Jul 17th 2012, 12:36 AM
Subliminalmessage
Re: Some questions about dividing decimals?
Quote:

Originally Posted by TotteryManx
2.0 Doesn't remain 2.0. You have the right idea. 2.0 has to be converted into a whole number, which requires moving the decimal 1 spot to the right. You have to do the same to 1.6 as well. 20 doesn't go into 16 so that is 0. In order to get a answer another 0 has to be attached to the 16, so it would become 160/20 which is 8 times. Move the decimal straight up and the answer is 0.8.

I'm not a math teacher or anything so I don't know how to explain it with proper terms. Sorry.

Thanks a lot, I understand now.