Page 301 - Math Smart - 7
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nevision
© Oscar pays $13.56 for 4 reams of white paper.
O Mrs Lee made a jug of orange juice by mixing a) Find the cost of 8 reams of paper.
1 glass of orange squash and 3 glasses of b) Find the cost of 2 reams of paper.
water. How many glasses of orange squash and
A ream of paper Is a packet containing 500
glasses of water are needed to make 6 jugs of
identical sheets of paper.
orange juice?
Q Yim mixes 2 bowls of fish stock and 5 bowls
o These are the ingredients that are needed for
of water to make some soup. Fah wants to making enough shortcrust pastry for 12 pies.
make 3 times the amount of soup that Yim
shortcrwst pastry
makes. How many bowls of stock and bowls
A/lakes 12 pies:
of water does she need?
150 g flour
Q A machine produces yellow gloves and pink A pinch of salt
gloves. For every 2 yellow gloves it produces, 75 Q butter
5 pink gloves are produced. If the machine 45 mi water
produced 400 yellow gloves, how many pink
gloves did it produce? a) What Is the ratio of the amount of
flour needed to the amount of butter
O Write these ratios in their simplest form.
needed?
a) 8:48 b) How many grams of butter is needed to
b) 8; 14 make 24 pies?
c) 12:10 c) Write down the quantities of the
d) 21 :28 ingredients needed to make 6 pies.
e) 125:30 d) Write down the quantities of the
ingredients needed to make 30 pies.
f) 32:72
Simplify these ratios. (E) Iris is 8 years old. The ratio of Iris's age to
Lim's age is4 : 7.
a) 6 weeks to 3 days
a) HowoldisLim?
b) 400 ml to 6/
b) What will the ratio of Iris' age to Lim's
c) 150 g to 2.4 kg
age be next year?
o Divide the following quantities in the given
Challenge!
ratios.
In the figure on the right,
a) 280 biscuits in the ratio 1 : 3
the shaded square, C, is
b) 125 sweets in the ratio 4 : 1
the part where square A
c) $315 in the ratio 5 : 2 and square B overlap.
d) $1320 in the ratio 4 : 7 The unshaded part of
of
square A is |
unshaded
the
There are 27 610 people at a football match.
part of square B. The ratio of
The ratio of the number of males to the
the shaded area to the total unshaded area
number of females is 8 : 3.
is 1 : 50. Given that the shaded area is 4 cm^
How many males are there at the match? find the area of square B.
