Scaled Things
Proportional Relationships
Circles, Circles, Circles
Miscellaneous Math
Riddles
100
If a scale factor is greater than one, will the shape get bigger, smaller or stay the same?
Bigger
100
True or False: Proportional Relationships can be represented by both graphs and tables
True
100
The line that segments a circle in half is called the what?
Diameter
100
What is 80/100 is what as a decimal?
.80
100
What has a foot but no legs?
A ruler!
200
True or False: Scaled copies always have the same angle measures
True
200
Proportional relationships are made up of what kind of ratios?
Equivalent
200
What do you do to the diameter of a circle in order to find the radius?
Divide by 2
200
Write ratio equivalent to 1/3
2/6
3/9
4/12
ect.
200
What has a spine but no bones?
A book!
300
The constant number by which all side lengths of the original figure are multiplied to get the scaled copy is called the what
Scale Factor
300
The fixed number that shows the relationship between two variables in a proportional situation is called the what?
The Constant of Proportionality
300
What is the formula for finding the circumference of a circle?
C=d x pi
300
What is the volume of this cube?
512units3
300
Mrs. Brown has 5 daughters. Each of these daughters has a brother. How many children does Mrs. Brown have?
Mrs. Brown has 6 children. Each daughter has the same brother. There are 5 daughters and 1 son.
400
A scale drawing uses 2 cm for 10 miles; a 4 cm line on the map represents this actual distance
20 miles
400
What is the equation we use in order to represent a proportional relationship?
y=kx
400
What formula do we use to find the area of a circle?
A = pi x r2
400
Solve.
(7+23)x9
135
400
I am an odd number. Take away a letter and I become even. What number am I?
Seven!
500
If the area of a square is multiplied by 9, the scale factor for the side lengths is this.
3
500
What do you look for in a graph to identify if it is proportional or not?
The line is straight and it goes through the origin (0,0)
500
Find the area of this quarter circle. Rounded to the nearest hundredth.
11.34
500
Solve for x.
9x+3=21
x=2
500
A bus driver was heading down a busy street in the city. He went past three stop signs without stopping, went the wrong way down a one-way street, and answered a message on his phone. But the bus driver didn't break any traffic laws. How?
He was walking, not driving.