Decimals
2.1+1.8
3.9
Simplify 3/12
1/4
What is the ratio of dashes to stars?
- - - - - * * * * * * *
5:7
What is |-4|?
4
If x=8, what is (40-x)÷x
4
3.8-1.2
2.6
1/2 + 3/4
5/4 or 1 1/4
Write the ratio 12:18 in its simplest form
2:3
|-4+10|
6
Solve for x:
x÷3=5
x=15
1.7x2.54
4.318
3/5 - 1/3
4/15
If the ratio of apples to oranges is 2:3 and there are 6 apples, how many oranges are there?
9 oranges
-9x3
-27
When is median useful?
When a set of data contains an outlier that will affect the mean
4.5-1.026
3.475
3/8 x 32/7
12/7 or 1 5/12
If there are 20 students in a class and 4 of them are girls, what percent of the class are boys?
80% are boys
-4-8
-12
Find the mean of the set of data:
2, 5, 6, 4, 8, 9, 1
5
1.05÷2.8
0.375
2/3 ÷ 4/5
5/6
20% of 14 is what number?
2.8
-2 x 3 + 5 - 7
-8
If the mean of a set of data is 14, and 4 of the five data points are 15, 12, 10, and 16, what is the fifth number?
17