Circles
What is the value of Pi?
3.14
.20 as a percent.
20%
1/4 as a decimal
.25
Scale up 2:4 two times.
6:12
Simplify expressions 2(x + 3 + y)
2x + 6 + 2y
What is the name for the middle point of a circle?
Center point
40% as a decimal
.40
1/3 as a decimal
.33
The ratio of tomatoes to red apples is 2:5. If there are 20 tomatoes, how many red apples are there?
50 apples
Simplify expressions −5(2x − 3)
-10x + 15
What is the circumference of a circle with a radius of 5
Hint: Formula is C = 2(Pi)r
31.42
.355 as a percent
35.5%
2 1/5 as a decimal
2.20
The ratio of blueberries to strawberries is 1:7. If there are210 strawberries, how many blueberries are there.
30 blueberries
Simplfy –4(–8s – 3)
32s + 12
What is the diameter of a circle that has a radius of 10?
20
100% as a decimal
1.0
2/5 + 4/10
ANSWER AS FRACTION
.4 + .4 = .8
8/10
The ratio of potatoes to turnips is 1:1. If there are 473 potatoes, how many turnips are there?
473 turnips
simplify 7(–3c + 6w – 1)
–21c + 42w – 7
What is the name of the line in a circle that extends from the circumference of the circle, to the centerpoint?
Radius
what is 2.55 as a percent?
255%
1.1 + 1.1 + 1.4 ANSWER AS FRACTION
3.6 or 3 3/5
The ratio of pears to green apples is 1:3. If there are 150 green apples, how many pears are there?
50 pears
Solve 5(10 + 3 + 15)
50 + 15 + 75
= 140