Proportions & Percents
How do you find a percent of a number?
Convert the percent to a decimal and then mutplity
When multiplying numbers with exponents, if they have the same base, you ____ the exponents.
add
How do you solve equations?
Inverse Operations
The general name of shapes that includes squares, rectangles, and rhombuses
parallelogram
How do you find the IQR?
Q3 - Q1
VOCAB: A comparison between two quantities
Ratio
Any number to the power of 0 is ___
1
What is the name of this symbol? >
Greater than
How do you find area of a triangle?
A= 1/2 bh or A=bh/2
What is the best measure of center for an asymmetrical data display?
Median
VOCAB: A ratio where a quantity is compared to one. For example: 45 miles per hour
Unit Rate
VOCAB: A symbol used to represent a mystery number
Variable
When solving an inequality problem, what do you do if you multiply or divide by a negative?
Flip the inequality sign
How do you find the scale factor?
After/Before. Divide the after length by the before length
What two data displays use categories?
Circle graphs and bar charts
How can you tell if a table is proportional?
Cross multiply
VOCAB: An action of combining parts of an expression of the same variable or are alike. Constants with constants and coefficients with coefficients.
Combine like terms
VOCAB: The number that is attached and multiplied by the variable is known as a _____
Coefficient
VOCAB: The distance from the center to the edge of a circle.
Radius
What markers do we remember when making circle graphs?
50%, 25%, and 33%. Half, quarter, and third
When writing an equation for a proportional relationship. You should write it in this format
y = kx
VOCAB: The action of multiplying a number to everything inside of parenthesis
Distributive Property
VOCAB: This word means the true value of a number. Or the distance a number is from 0 on the number line
Absolute Value
How do you solve composite shapes?
Cut shapes up into shapes that you know. Find the areas of each shape. Then add/sub those areas. Add for normal composite shapes. Subtract those that only want a shaded area.
When asked to identify the appropriate spread or average of the data display, you are being asked what?
The best measure of center and variation. Spread means variation. Average/middle means center