Circles
The distance from the center of a circle to the outside is called the...
radius
What is (4/5) as a percent?
80%
Find an example of a cylinder in the room.
?
If there are 21 weeks in the semester, and this is week 9, what fraction of this semester of math class have we finished after today?
(9/21) or (3/7)
What is the opposite of 'In front of'?
Behind
The distance from one side of a circle to the other, through the center, is called the...
diameter
What is (3/8) as a percent?
37.5%
What 2D shapes are used to make a cylinder?
(what shapes are the faces of the cylinder)
2 circles and 1 rectangle
(1/6) + (1/4) + (1/3) + (1/2) =
_______ means 'in the direction of'.
The perimeter of a circle is also called the...
circumference
A t-shirt normally costs $15, but there is a 20% sale.
How much do I need to pay to buy the shirt?
15 * (100%-20%) = $12
How do you find the volume of a cone?
(What is the equation?)
π*r2*h*(1/3)
I need to drive 50km. If I drive (2/5) of the way there, and then drive 15km more, what fraction of the total distance have I driven?
(7/10), seven-tenths
The farther away I move from something, the _____ it looks.
smaller
Pi is the ratio of which two parts of a circle?
the circumference over the diameter, c/d
The word percent has two parts, 'per' and 'cent'.
What does 'cent' mean?
100
If you have a cone and a cylinder with the same height and radius, the volume of the cone is what percentage of the volume of the cylinder?
33%
Mary has (2/5) of a bag of marbles, Tony has (3/8) of a bag of marbles. They put their marbles together and then each take half of them.
What fraction of the bag of marbles does each child get?
(31/80)
This question is in row ____, column _____.
row 4, column 5.
Circle A has a radius of x and an area of y:
area = x, radius = y
Circle B's radius is half of Circle A's.
What is the area of Circle B in terms of x?
(1/4)x
What percent of the class is girls?
?
How do you find the surface area of a cylinder?
(What is the equation?)
2πr2 + 2πrh
A box of cookies weighs 1.5kg. Mason eats (1/3) of the cookies and Ella eats (1/4) of them. What is the weight of the remaining cookies?
(1/3) + (1/4) = (7/12)
1 - (7/12) = (5/12)
(5/12) * (3/2) = (15/24)
(15/24) = (5/8)kg = 0.625kg
If your shadow is only below you, not left, right, in front of, or behind you, then where is the sun?
Directly above you.