Page 200 - Math Smart - 7

Gino had 42 ^ / of petrol in the petrol tank of his car at the start of his journey.
At the end of his journey, the volume of petrol left was 261 /. How many litres of
petrol did Gino use for the journey?

Solution
To find the volume of petrol Gino used, subtract the volume of petrol left from
the volume of petrol at the start of the journey.
42i-26|=16l-

= 15 + I +

= 15
Gino used 151 / of petrol for the journey.

Check My
Understanding

o On Monday, Keith spends ^ of his day at school and ^ of his day practising soccer.
How many hours does he have left to do his homework, play and sleep?
e Ying had ^ kg of grapes. She gave j kg of grapes to her neighbour. Then, she bought

another ^ kg of grapes. How many kilograms of grapes did she have in the end?
e Mimie mixed 8 ^ / of water and ^ / of orange squash to make a drink.
How many litres of drink did she make?

O A baker had 25 ^ kg of flour at the start of the day. At the end of the day, the mass of flour
he had left was 9 kg. How many kilograms of flour did baker use?
his
money
of
© Duncan spends ^ of his money on bread, | and ^ of his money on chocolate.
milk
on
a) What fraction of his money does Duncan spend at the shop?
b) What fraction of his money does he have left?

Try and Apply!

Fill in the missing numbers
a) b)
in the magic squares. The 1 3^ 2 21
numbers in the rows, columns
and diagonals should add up
to the same total — the magic
1 2 3
number!

Fractions