Page 205 - Math Smart - 7

o Arrange the fractions ^ descending order.
In

<E) Which is more?
1 1
a) of 24 or of 25
4 5
7 1
b) of 45 or of 60
1 2
2 3
c) of 30 or of 40
5 8
d) Work out the following. Give your answers in simplest form.
a) |+^ b) :^ + ^
T2-1
® Mr Jones buys a television set that costs $6000. He wants to pay one-eighth
of the price in cash. He wants to pay the balance over a period of 12 months.
a) How much money will he pay in cash?
b) How much money will he pay each month?

® Are the following statements true or false?
If they are false, correct them so that they are true.
a) is less than one-half.
10
b) If the denominator and the numerator are equal, the fraction is 1.
c) If the denominator is twice the numerator, the fraction is equal to a half.

d) If you add 1 to the denominator, you make the frartion greater.
e) If the denominator is more than the numerator, the fraction is less than 1.

Mathematics Connect

BODY MASS INDEX

Ttf

Underweight Overweight
BMI<18.5 BMI 25-29.9

A person's body mass index (BMI) is a measure of body fat based on height and weight. It is calculated
by dividing the person's mass in kilograms by height in centimetres squared, rounded to one decimal
place. A normal BMI is less than 25. A person is overweight or obese if the BMI is between 25 and 29.9
and greater than 30 respectively. BMI measurements give doctors information about patients' health,
and they in turn suggest health advice for them.