Simplify
56:28
2:1
If a classroom has 8 boys and 24 girls, what is the fraction of girls in this class?
3/4
My uncle is 3 times as old as I am. What is the ratio of my age to my uncle's age?
1:3
Fill in the blank.
____:3 = 32:12
8
What is 3/8 as a percentage?
37.5%
72:45
8:5
Divide 88 in the ratio 2:4:5
16, 32 and 40
In basketball, Katrina makes 12 out of every 20 free throws. Her coach claims that if she tries 45 free throws, she should make 28 of them. Is the coach's claim correct?
No, the coach is not correct. 12/20 is equal to 27/45
Fill in the blank.
4:_______ = 44:121
11
List three ways of representing ratio
word
colon
fraction
percentage
If you spent 1 h 10 min drawing and 1 h singing, the ratio of the time spent singing to the time spent drawing would be this.
6:7
The ratio of the length of String A to the length of String B is 1:4. String A is 5 m long. What is the total length of the two pieces of string?
25 meters
A prize is divided in the ratio 5:1.
If the difference between the shares is £200, how much is the total prize?
£300
Fill in the blank.
________:9 = 225:81
25
Look at the chart below. Does it show proportional relationship?
X Y
1/2 1
2 4
8 16
Yes
3kg:250g
12:1
How to determine if two ratios are equivalent?
1. Simplify both ratios. If they become the same, they are equivalent.
2. cross product property
3. common factor
A box of cereal recommends using 45g cereal and 30ml milk to make 1 bowl of cereal. How much milk do I need to make the maximum number of bowls from a 500g box?
11 bowls maximum
11x30ml = 330ml milk
_______:39 = 36:117
12
What is the reciprocal of -5/7
-7/5
44,000cm:12km
11:300
The ratio of the number of Jake's beads to Bob's beads is 2:7. Bob has 42 beads. If Bob gives 12 beads to Jake, what will be the new ratio of Jake's beads to Bob's beads?
4:5
David has a full 800ml bottle of car shampoo.
He is going to mix some of the car shampoo with water.
The bottle has this guidance: Mix 1/4 of the bottle with 1.8L water.
David is going to use 360ml of water.
How much car shampoo should David use in ml?
40ml
Solve the proportion
32/7 = 112/x
x = 49/2
TRUE or FALSE: You can always make equivalent ratios by adding or subtracting the same number on both parts of a ratio.
False! Can only multiply or divide