One formula for circumference of a circle is C = πd. What is the other formula we learned for circumference of a circle?
C = 2πr
100
How many degrees are in a right angle?
90˚
100
I have 5 red, 3 blue, and 2 orange marbles. If I randomly pick one, what is the probability it will be blue? Express your answer as a fraction.
3/10
200
The ratio of men to women is 7 to 3. If there are 28 men in a room, how many women are there?
12 women
200
-5 + -10
-15
200
What is the area of a circle with radius 5 cm? Leave π in your answer.
Area = 25π cm²
200
Two angles are supplementary. One of the angles is 134˚. How many degrees is the other angle?
46˚
200
17 out of 50 people like cats. If I randomly pick a person, what is the probability he will like cats? Express your answer as a decimal.
0.34
300
In a pet store, for every 5 cats there are 8 fish. If there are 40 fish, how many cats are there?
25 cats
300
6 + -4
2
300
What is the circumference of a circle with diameter 12 ft? Leave π in your answer.
12π ft
300
In a triangle, two of the angles are 50˚ and 90˚. How many degrees is the third angle?
40˚
300
I roll a regular six-sided die. What is the probability that I get either a 1 or a 5? Express your answer as a fraction.
2/6 = 1/3
400
The ratio of red pins to green pins is 8 to 12. If there are 6 red pins, how many green pins are there?
9 green pins
400
9 - -7
16
400
What is the circumference of a circle with radius 8 m? Leave π in your answer.
C = 16π m
400
Two angles are complementary. If one of them is 37˚, how many degrees is the other angle?
53˚
400
There is a 38% chance it will rain tomorrow. What is the probability that it will not rain?
62%
500
These two triangles are similar. What is the length of side DE? (picture will be drawn on board)
20
500
-12 - -3
-9
500
What is the area of a circle with diameter 8 yd? Leave π in your answer.
A = 16π yd²
500
How many degrees is angle M? (picture will be drawn on board)
40˚
500
I have 15 cookies, 7 brownies, and 3 cakes. If I randomly pick a dessert, what is the probability it will be a brownie? Express your answer as a percent.