Chapter 2 - Numerical Methods 1

Question 1

2.1 Rounding

What rule do we follow when deciding to round up or down?

Answer 1

If the number after the decimal place we are rounding to is 5 or more then we round up. If 4 or less we round down (keep the number we are rounding the same).

Question 2

2.1 Rounding

What is meant by signifcent figure?

Answer 2

Significent figures start at the first non-zero digit and ignore decimal places.

Question 3

2.1 Rounding

Wht is meant by decimal place?

Answer 3

The position of a digit to the right of a decimal point