# Why are these decimal subtractions = minus numbers?

• Jun 30th 2012, 09:46 AM
Subliminalmessage
Why are these decimal subtractions = minus numbers?
1.76 - 15.10

1.28 - 7.43

8.88 - 60.10

Why do they = -numbers?

Thanks!
• Jun 30th 2012, 09:53 AM
richard1234
Re: Why are these decimal subtractions = minus numbers?
Because you're subtracting a larger number from a smaller number. For example, 5-2 = 3, but 2-5 = -3.
• Jun 30th 2012, 10:09 AM
Subliminalmessage
Re: Why are these decimal subtractions = minus numbers?
Quote:

Originally Posted by richard1234
Because you're subtracting a larger number from a smaller number. For example, 5-2 = 3, but 2-5 = -3.

Thanks a million richard, does that rule count for all subtractions on any type of number and not just decimals?

Also, the biggest number is always on top, right?
• Jun 30th 2012, 10:24 AM
richard1234
Re: Why are these decimal subtractions = minus numbers?
Quote:

Originally Posted by Subliminalmessage
Thanks a million richard, does that rule count for all subtractions on any type of number and not just decimals?

Doesn't matter if that number is decimal, fraction, integer, etc.

Quote:

Originally Posted by Subliminalmessage
Also, the biggest number is always on top, right?

No. However, if you want to subtract 24.65 - 56.19, you could perhaps write it as -(56.19 - 24.65) and carry out the subtraction.
• Jun 30th 2012, 11:28 AM
Subliminalmessage
Re: Why are these decimal subtractions = minus numbers?
Quote:

Originally Posted by richard1234
Doesn't matter if that number is decimal, fraction, integer, etc.

I see, thanks.

No. However, if you want to subtract 24.65 - 56.19, you could perhaps write it as -(56.19 - 24.65) and carry out the subtraction.

I don't understand though, why can't you just do

56.19
24.65

Instead of doing it with the smallest number on top and having to have a - answer?

What is the difference between

4.56
- 5.53 = -0.97

5.67
- 4.42 = 1.25

I'm really confused, probably because I took a break from maths just then and I've came back with a puzzled mind. So why is one minis and one isnt? I know I just asked this but I don't see the difference between these two.
• Jun 30th 2012, 12:50 PM
richard1234
Re: Why are these decimal subtractions = minus numbers?
Quote:

Originally Posted by Subliminalmessage
I don't understand though, why can't you just do

56.19
24.65

Instead of doing it with the smallest number on top and having to have a - answer?

What is the difference between

4.56
- 5.53 = -0.97

5.67
- 4.42 = 1.25

I'm really confused, probably because I took a break from maths just then and I've came back with a puzzled mind. So why is one minis and one isnt? I know I just asked this but I don't see the difference between these two.

The traditional way to do subtraction is to put the larger number (larger = larger absolute value) on top.