# maths

Watch
Announcements
Thread starter 2 years ago
#1
units of gas costs 4.2 pence. On average Ria uses 50.1 units of gas a week. She pays for the gas she uses in 13 weeks. Work out an estimate for the amount ria pays
0
2 years ago
#2
Work out an estimate for the amount ria pays
0
Thread starter 2 years ago
#3
(Original post by gdswefqwe)
Work out an estimate for the amount ria pays
what estimate would you give
0
Thread starter 2 years ago
#4
(Original post by FRAHT)
what estimate would you give
i'm not really good at estimating so can you help me please
0
2 years ago
#5
So for estimating, you typically round to 1/2 significant figures, and then do the question in the same method as you would do

How I'd do it:
Spoiler:
Show

I'd round 4.2 to 4, 50.1 to 50. Multiplying these would give 200 pence per week. Then you could possibly round 13 to 10 and multiply that with the 200 to = 2000 pence, but you could leave the 13 as it is and multiply it to give a more accurate estimation of 2600
0
X

new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### Poll

Join the discussion

#### Do you think receiving Teacher Assessed Grades will impact your future?

I'm worried it will negatively impact me getting into university/college (16)
39.02%
I'm worried that I’m not academically prepared for the next stage in my educational journey (4)
9.76%
I'm worried it will impact my future career (2)
4.88%
I'm worried that my grades will be seen as ‘lesser’ because I didn’t take exams (9)
21.95%
I don’t think that receiving these grades will impact my future (5)
12.2%
I think that receiving these grades will affect me in another way (let us know in the discussion!) (5)
12.2%