Area & Surface Area
Find the area of a rectangle with length 8 and width 5
40
Write ratio of 6 red to 3 blue
6:3 or 2:1
What is 50% of 20?
10
1/2 ÷ 1/4
2
Solve: x + 5 = 12
x = 7
0.5 + 0.3
0.8
-3 + 5
2
Area of a triangle with base 10 and height 6
30
Simplify 8:12
2:3
Unit rate: 60 miles in 2 hours
30 mph
3/4 ÷ 1/2
3/2 or 1.5
Solve: 2x = 10
x = 5
2.4 X 10
24
-6 - 2
-8
Surface area of a cube with side length 4
96
If ratio is 2:5, how many total parts?
7
25% of 80
20
2/3 ÷ 3/4
8/9
Solve: 3x + 2 = 11
x = 3
3.6 ÷ 0.6
6
4 × -3
- 12
Area of a rectangle: 12 × 9
108
3 pencils cost $6 → what’s the ratio of pencils to dollars?
3:6 or 1:2
15 is what percent of 60?
25%
5 ÷ 1/2
10
Solve: 2(x + 3) = 14
x = 4
0.75 as a fraction
3/4
-10 ÷ 2
-5
Surface area of a rectangular prism (l=5, w=3, h=2)
62
If 4:1 ratio and total is 20, how many in the larger group?
16
$50 increased by 20%
60
7/8 ÷ 2/3
21/16 or 1 5/16
Simplify 3x + 4 + 2x
5x + 4
4.25 + 1.8
6.05
-2 × -6
12