Question

1. about 0.45% of the students in hannahs school have a landline phone at home. how do you express 0.45% as a fraction and as a decimal?

Explanation:

Step1: Convert % to decimal

To convert a percentage to a decimal, divide by 100 (move the decimal point two places left).
$0.45\% = \frac{0.45}{100} = 0.0045$

Step2: Convert decimal to fraction

Rewrite 0.0045 as a fraction over 10000, then simplify.
$0.0045 = \frac{45}{10000} = \frac{9}{2000}$
(divide numerator and denominator by their greatest common divisor, 5)

Answer:

As a decimal: $0.0045$
As a fraction: $\frac{9}{2000}$