Ratio and proportion

Proportion

Name: ______________________________Date: ______________Score: ______ / 20

1.
There are 10 blue and 20 red boats (30 in total). What proportion are blue?
1. A1/3
2. B1/2
3. C2/3
4. D1/10
2.
A bag has 2 orange, 3 blue and 5 green counters (10 in total). What proportion are blue?
1. A3/10
2. B3/5
3. C2/10
4. D5/10
3.
A bag has 2 orange, 3 blue and 5 green counters (10 in total). What percentage are blue?
%
4.
'1 in every 4 beads is white.' What proportion of the beads are white?
1. A1/4
2. B4/1
3. C3/4
4. D1/3
5.
A string has 4 grey beads out of 12. What proportion are grey?
1. A1/3
2. B1/2
3. C4/8
4. D1/4
6.
Zara has 10 blue and 5 red pens (15 in total). What proportion are red?
1. A1/3
2. B1/2
3. C2/3
4. D5/5
7.
What does proportion compare?
1. AA part to the whole
2. BOne part to another part
3. COnly two colours
4. DNothing
8.
If 3 out of 10 counters are blue, the proportion that are blue is 3/10.
True False
9.
The phrase 'for every' is used to describe proportion.
True False
10.
In a group of 10, 3 are red. What percentage are red?
%
11.
In a group of 20, 7 are red. What percentage are red?
%
12.
In a group of 25, 23 are red. What percentage are red?
%
13.
In a group of 25, 7 are red. What percentage are red?
%
14.
In a group of 100, 75 are red. What percentage are red?
%
15.
In a group of 5, 1 are red. What percentage are red?
%
16.
In a group of 20, 8 are red. What percentage are red?
%
17.
In a group of 10, 6 are red. What percentage are red?
%
18.
In a group of 5, 4 are red. What percentage are red?
%
19.
In a group of 25, 8 are red. What percentage are red?
%
20.
In a group of 50, 31 are red. What percentage are red?
%

Answer key

Ratio and proportion — Proportion

1.A. 1/3
2.A. 3/10
3.30 %
4.A. 1/4
5.A. 1/3
6.A. 1/3
7.A. A part to the whole
8.True
9.False
10.30 %
11.35 %
12.92 %
13.28 %
14.75 %
15.20 %
16.40 %
17.60 %
18.80 %
19.32 %
20.62 %