{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Approximation and Errors Ex.1A_2

# Approximation and Errors Ex.1A_2 - (b the unit of that time...

This preview shows pages 1–2. Sign up to view the full content.

Chapter 1.1 Significant Figures Let’s Do Some Exercises! 1. In each of the questions below, round off the number correct to: (i) 4 significant figure (ii) 4 decimal places (iii) The nearest hundred (iv) The nearest integer (a) 93207 (i) (ii) (iii) (iv) (b) 0.022497 (i) (ii) (iii) (iv) (c) 12.963 (i) (ii) (iii) (iv) (d) 5408.60 (i) (ii) (iii) (iv) (e) 530.047 (i) (ii) (iii) (iv) (f) 100237 (i) (ii) (iii) (iv) 2. Evaluate 7 2 ÷ 18 and give the answer correct to 3 significant figures. 3. Yesterday June finished housework in 5 hours 33 minutes and 46 seconds. Change (a) the unit of that time to hours and correct the answer to 4 significant figures;

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (b) the unit of that time to minutes and correct the answer to 2 significant figures. 4. A blackboard of dimensions 3.8m × 1.2m is to be covered by sheet of paper each of dimensions 205mm × 450mm. (a) Estimate the area of a sheet of paper by first rounding off each dimension correct to 3 significant figures and give your answer in m 2 . (b) Estimate how many sheets of paper are needed to cover the whole blackboard....
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

Approximation and Errors Ex.1A_2 - (b the unit of that time...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online