Question

I need clarifications in rounding to the nearest half (0.5)

Answer 1

Can you please go over the rules?

Answer 2

If the number is 1.0 it should be equal to 1
If the number is 1.1 should be equal to 1
If the number is 1.2 should be equal to 1
If the number is 1.3 should be equal to 1.5
If the number is 1.4 should be equal to 1.5
If the number is 1.5 should be equal to 1.5
If the number is 1.6 should be equal to 1.5
If the number is 1.7 should be equal to 1.5
If the number is 1.8 should be equal to 2.0
If the number is 1.9 should be equal to 2.0
If the number is 2.0 should be equal to 2.0
If the number is 2.1 should be equal to 2.0
and so on...

Answer 3

Im 99.9% sure that is correct.

Answer 4

If the number is 1.25, would you round it to 1.0 or 1.5?

Answer 5

Multiply the number by 2, what do you get?

Answer 6

2.5

Answer 7

Rounding 1.25 to the nearest half is just like rounding 1.5 to the nearest whole number. 5 and up rounds up.
So 1.25 rounds to 1.5

Answer 8

^ thats the easier way of explaining it

Answer 9

So I was actually looking this thing up in the internet, and it was saying for me to multiply by 2 (2.5), round (I guess to 3), and then divide by 2 (1.5). Is the rounding to 3 correct in the 2nd step?

Answer 10

Thats what i was trying to explain... you are correct!

Answer 11

https://en.wikipedia.org/wiki/Rounding#Tie-breaking

Answer 12

One more, just to clarify.

So 7.36 to the nearest 1/2
1) 7.36 x 2 = 14.72
2) 14.72 round to the nearest whole number 15
3) 15 divided by 2 = 7.5

Question: In the 2nd step, do I round to the nearest whole number?

Answer 13

Yes

Answer 14

And is my rounding correct?

Answer 15

Yes, it is... im almost sure of it

Answer 16

Ok I'll just ask someone else to make that "almost" into "completely".. but thanks so much for your help!

Answer 17

Okay, I dont want to give you wrong information.

Answer 18

@jim_thompson5910 @Mertsj @Vocaloid

Answer 19

`So I was actually looking this thing up in the internet, and it was saying for me to multiply by 2 (2.5), round (I guess to 3), and then divide by 2 (1.5). Is the rounding to 3 correct in the 2nd step? `

@calculusxy which website is saying that?

Answer 20

http://stackoverflow.com/questions/1329426/how-do-i-round-to-the-nearest-0-5
@jim_thompson5910

Answer 21

Ok it looks like that method works. I haven't tested it 100% but I did a few test cases and it seems to hold up just fine.

Answer 22

`One more, just to clarify. `

`So 7.36 to the nearest 1/2 `
`1) 7.36 x 2 = 14.72`
`2) 14.72 round to the nearest whole number 15`
`3) 15 divided by 2 = 7.5`

`Question: In the 2nd step, do I round to the nearest whole number? `

@calculusxy it all looks good. And yes, you round 14.72 to the nearest whole number to get 15.

Answer 23

thank you so much for the clarification!

Answer 24

no problem