Integers & Expressions
A positive plus a positive equals a positive. A negative plus a negative equals a negative. A positive plus a negative, take the sign of the greater number and subtract.
What are the addition rules for integers?
A fraction reduced so that the numerator and denominator have no common factors other than 1.
Simplest form
The distance from the center of a circle to any point on the circle.
What do you multiply a decimal by to make it a percent?
100
What is the probability of rolling a odd number on a 6-sided number cube?
1/2
(3/6 is not correct because it is not simplified.)
The entire group being studied
Population
Add the opposite.
Subtraction rule for integers.
What comes third in Order of Operations?
Multiplication or Division, whichever comes first
A line segment that goes across a circle through its center; it is twice the radius.
diameter
The amount of money taken off the original price.
discount
A comparison of two quantities using division.
Ratio
A sample that does not fairly represent the population.
Biased sample
Multiplication Rules for integers.
Like signs are positive. Unlike signs are negative.
How many answers can you have in an equation?
1
A number (about 3.14) that represents the ratio of a circle’s circumference to its diameter.
Pi
If you want to turn a percent into a decimal, do you multiply or divide it by 100?
divide
The products you get when you multiply across in a proportion (used to check if two ratios are equal).
Cross product
A sample that fairly represents the population
Unbiased sample
Terms that have the same variables raised to the same powers.
Like terms
Writing an expression as a product of factors.
Factoring
Opposite angles formed when two lines intersect; they are equal.
Vertical angles
A decimal that has a pattern of digits that repeats forever.
Repeating decimal
An event made up of two or more simple events.
Compound events
A type of graph made with dots representing the data.
Dot Plot
The distance a number is from 0 on a number line (always positive).
Absolute Value
How many answers can you have in an inequality?
Infinite number
Two angles that share a common side and vertex and are next to each other.
Adjacent Angles
The percent a number is reduced from its original value.
Percent decrease
If Mrs. Smythe can paint a room in 3 days and Mrs. Schiavo can paint a room in 6 days, how long would it take them if they painted the room together?
2 days
In a data set, what is thee first step in determining the median?
Putting the data in order from least to greatest.
A number that can be written as a fraction.
A rational number
When do you "flip the inequality sign" in an inequality?
When you multiply or divide by a negative number
Supplementary Angles
Two angles that add up to 180°.
Interest calculated only on the original amount of money (principal).
Simple interest
A ratio that compares two quantities with different units (like miles per hour).
Rate
A data value that is much higher or much lower than the rest of the data in a set. It does not fit the overall pattern.
Outlier
| -14|
14
What is this an example of:
4 (12 + 6x)= 72
The Distributive Property
Two angles that add up to 90°.
Complimentary Angles
The percent a number grows from its original value.
Percent increase
What is the percent proportion formula?
%/100= is(part)/ of(whole)
What is the smallest number in a Box and Whisker Plot called?
a minimum.
6 + (-6)= 0 is an example of what property?
Additive Inverse
What is the first step in solving an equation or inequality?
Combine like terms!
What is the formula for area of a circle?
Pi x the r2
The original amount of money invested or borrowed.
Principal
A rate where the second quantity is 1 (like $3 per 1 item).
Unit rate
What is the median of the following data set:
-3, 10, -7, 27, 88
10
7 + (-12) + 16=
21
Factor the following expreession:
24x + 32
8 (3x + 4)
Find the circumference of a semi-circle with a radius of 3 cm.
9.42 cm.
Write 100% as a decimal.
1
The fixed number that relates two proportional quantities. It tells how much one quantity changes compared to another.
Constant of Proportionality
What is the mean of the following data set:
97, 100, 88, 72, 0, 0
59.5