Math Review!

Numerical Representations

100

True or false:

The order of numbers from the innermost circle to the biggest circle is -- integers, whole numbers, and rational numbers.

False.

It is whole numbers, integers, and rational numbers.

200

Decimals and fractions are classified as:

Rational numbers

300

The definition of an integer

A whole number and it's opposite

400

The first step in comparing and ordering fractions 

Find the LEAST common denominator

500

Order the set of rational numbers:

0.25, 0.03, 1.5, 1.15, 15%

0.03, 15%, 0.25, 1.15, 1.5

Integers

100

Integers are:

Positive and negative whole numbers

200

The term used to describe adding a positive and negative together:

Zero pairs

300

Two ways to show integer operations (models)

number line, counters

400

The rule when subtracting a negative

You add the opposite

500

If the signs are the same in multiplying and dividing integers then the sign is __________. If the signs are different in multiplying and dividing integers then the sign is ______________.

positive, negative

Proportionality

100

A ratio is a ______________ of _____ numbers.

comparison, two

200

A proportion is a term used when there are _____ equal _______.

two, ratios

300

An animal shelter has 20 dogs to 30 cats. What is the ratio of dogs to cats?

2:3

400

What is 50% of 90?

45

500

Create a proportion for this question:

At a neighborhood Forth of July party, Ms. Chen plans to serve banana pudding. She plans to make 2 batches for every 9 people attending. If 72 people will attend the Fourth of July party, then how many batches does Ms. Chen need to make?

2/9 = x/72

Geometry

100

The formula for the circumference of a circle

C = (pi)d

200

With a triangle, all the sides add up to:

180'

300

Find the area of a rectangle with a base of 12 in. and a height of 7 in.

A = 84 in^2

400

The diameter of a circle with a radius of 3.2 in

diameter: 6.4in

500

A similar figure can be a ________ or an ___________ based on the scale factor. 

reduction, enlargement

Equations and Inequalities

100

Solve:

2x < 24

x < 12 (has to be said with the inequality sign)

200

What are the four symbols associated with inequalities?

less than, greater than, less than or equal to, greater than or equal to

300

What would be the first thing to do to solve this equation? use math vocabulary. 

3x + 15 = 345

You would use the inverse operation (opposite) and subtract 15 from both sides. 

-Answer has to include inverse and both sides.

400

What is the difference between an equation and an expression?

An equation has an equal sign and an expression does not contain an equal sign. 

500

Name 6 words associated with equations and inequalities:

equivalent, equal, coefficient, variable, less than, greater than, less than or equal to, greater than or equal to, inverse, etc.