MYTUTOR SUBJECT ANSWERS

647 views

What are the differences between decimal points and significant figures?

The total number of digits to the right of the point are known as 'decimal points' whereas significant figures start from the first non-zero number. Note: As significant figures start from the first non-zero number this could be to the left of the decimal point. We then use the laws of rounding to come up with our final answers!
d.p. = decimal points, s.f. = significant figures

Examples:

a) 704.539018 is 704.53902 (to 5d.p.) and 704.54 (to 5s.f.)

b) 0.0091 is 0.01 (to 2d.p.) but 0.0091 (to 2s.f.)

c) 0.100400 is 0.10040 (to 5d.p.) and also 0.10040 (to 5s.f.) because, from the first significant figure (non-zero) onwards, all numbers are significant. This includes zeros between non-zeros and all trailing zeros.

Niall L. GCSE Maths tutor, A Level Maths tutor

2 years ago

Answered by Niall, who tutored GCSE Maths with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

465 SUBJECT SPECIALISTS

£18 /hr

Abhinav T.

Degree: Medicine (Other) - University College London University

Subjects offered:Maths, Physics+ 2 more

Maths
Physics
Chemistry
Biology

“Confirming understanding by verbal confirmation and communication so as to ensure clarity and confidence during the learning process and progression.”

MyTutor guarantee

£18 /hr

Nele W.

Degree: Geology & Geophysics (Msci, 4 Years) (Bachelors) - Imperial College London University

Subjects offered:Maths, Physics+ 4 more

Maths
Physics
German
English Language
Chemistry
-Personal Statements-

“Hello, I am a 2nd year student studying at Imperial College London. I am German and my hobbies include: Tennis, Hockey and the Clarinet.”

MyTutor guarantee

£18 /hr

Madeleine N.

Degree: Maths and Physics (Masters) - Durham University

Subjects offered:Maths, Spanish+ 2 more

Maths
Spanish
Physics
Further Mathematics

“Enthusiastic student, studying Maths and Physics at Durham university: keen to work hard with students to improve their results.”

About the author

Niall L.

Currently unavailable: until 01/12/2015

Degree: Mathematics (with Study in Europe) (Bachelors) - Bristol University

Subjects offered:Maths

Maths

“About me I'm Niall, I'm a final year Maths student at Bristol University and I'm a GCSE and A-Level Maths Tutor on MyTutor. Maths can be really elegant and I don't think anything can compare to that great feeling of satisfaction wh...”

MyTutor guarantee

You may also like...

Other GCSE Maths questions

how do you find the original price of something that has been changed by a percentage decrease

Solve for X and Y: 2y + x = 7; 3y - x = 8

Simplify √90+√360+5√10

Factorise and solve x^2 - 8x + 15 = 0

View GCSE Maths tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok