Question

(a) write 7 as a percentage.
(b) write 0.31% as a decimal.
(a) 7 = %
(b) 0.31% =

Explanation:

Part (a)

Step1: Recall percentage conversion

To convert a number to a percentage, multiply by 100 and add the % sign.
For the number 7, we do \(7\times100\).

Step2: Calculate the result

\(7\times100 = 700\), so 7 as a percentage is \(700\%\).

Step1: Recall percentage to decimal conversion

To convert a percentage to a decimal, divide by 100 (which is the same as moving the decimal point two places to the left).
For \(0.31\%\), we do \(0.31\div100\).

Step2: Calculate the result

\(0.31\div100 = 0.0031\).

Answer:

\(700\)

Part (b)