Pre Algebra
If a = 6 how much is 2a?
12
How many sides does a decagon?
10
There are 8 apples 2 of them are red the rest are green. How many of them are green?
75%
2/4 - 4/8
0
How do you find mean
Mean is calculated when you add numbers then you divide by the sum and divide by how many numbers.
If a= 8 then how much is 3a+4
28
How many sides does a heptagon have?
There are 100 aliens 60 of them are green 40 of them are brown how many of them are brown?
40%
3/4+5/6
1 7/12
How do you find median
Median is found by ordering the numbers from least to greatest then cross out to find the middle number.
If c = 2 then how much is 3a
6
How many sides does a pentagon have?
5
There are 10 blue crayons 5 red crayons and 5 green crayons. How many of the crayons are blue?
50%
8/16 - 1/2
0
How do you find mode
Mode is when you find which number appears the most.
If B=5 then how much is 4b+1
21
How many sides does a hexagon have?
6
There are 4 leaders in an imaginary world. 2 are men and 2 are women. how many of them are women?
50%
4/5 + 2/10
1
How do you find range
How do you find it? Find the highest - smallest number.
If a=4.2 then how much is 5a+3
24
How many sides does a octagon have?
8
There are 20 people in a class and 8 of them are boys and 12 are girls. How many of them are boys?
40%
15.3 x 2.3
35.19
How do you find Interquartile range (IQR)
You subtract Q3 and Q1