Math Flash Cards 2017-06-30T19:00:19+00:00

Math Terminology + Formulas

What are equivalent fractions?

Fractions equal to the same decimal

For example, 1/2 and 2/4 = 0.5

What is a most reduced fraction?

The lowest equivalent fraction

1/2 is the most reduced form of 2/4 and 250/500

What is a common denominator?

Same bottom numbers in fractions

2/4 and 3/4 have a common denominator

What does PEMDAS mean?

Order of Operations

Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction

What symbol means is ?

=

The equal sign

What does of indicate in a word problem?

Multiplication

What is the formula for a percent increase?

(New Number  — Original Number) ÷  (Original Number) x 100

What is the formula for the area of a triangle?

½ (base) (height)

What is the formula for circumference?

2 πr

What is the formula for the area a semicircle?

½πr²

What the formula for speed?

Distance ÷ Time

How many sides to a cube?

6

This helps you calculate surface area.

What does circumference measure?

Perimeter of Circle

It’s the distance around a circle

What metric prefix means 100?

Hecto

What metric prefix means 0.1?

Deci

1000% = 10

True or False?

True

If 1 = 100%, 10 = 1000%

14% = 0.014

True or False?

False

14% = 0.14

How many inches are in a square foot?

144

12 inches in a foot, 12×12 = 144 = square inches in square foot

More Math Practice

What is 14 percent of 90?

12.6

0.14 x 90 =12.6

What is 12 as a percentage?

1200%

Be sure you know the rules to convert decimals and percentages!

What is 200 percent of 7?

14

200% = 2 –> 2 x 7 =14

What is 0.06 as a most reduced fraction?

3/50

0.06 = 6/100 = 3/50

What is 1.38 as a percentage?

138%

If 1 = 100%, then 1.38 as a percentage must be bigger.

80 percent of what number is 88?

110

0.8x = 88

10 grams is how many kilograms?

0.01 kg

You’ll need to know metric prefixes on the TEAS.

3x −10 = 89

Solve for x

x = 33

Add 10 to both sides. Then, divide both sides by 3.

3x −10 = 89

4 (12 + 7 × 2) − 8 × 3 = ?

80

Use PEMDAS to answer this question.

4 (12 + 7 × 2) − 8 × 3 = ?

What's the formula for the surface area of a cube?

6a²

a = area

You have 4 sets of flashcards with 42 questions each. How many total questions are there?

168

Use multiplication in this question.

½ ( 2² + 4 × 3 ) − 16 ÷ 2 = ?

1

Be sure to review PEMDAS rules.

Data Interpretation

Which axis is for the dependent variable?

X

You’ll see graphs in the math section.

Define the independent variable.

The independent variable is controlled and changed by the experimenter.

What is covariance?

It’s the relationship between variables—how they change in relation to each other.

When should you use a pie chart?

Pie charts are best for graphing proportions of a whole 100%

When should you use a bar graph?

Bar graphs chart the specific amounts of different groups (for example, amount of students per grades 7-10).

When should you use a scatter plot?

Scatter plots graph the relationship between 2 variables

Which is the same as the average?

Mean, Median, Mode, or Range?

Mean

The mean is the average. You’ll need to know these terms for the TEAS.

How do you find the range?

Subtract the lowest number from the greatest number.

How do you find the mode?

The mode is the value that appears the most.

What is the mean?

2, 16, 5, 8, 4, 7

7

Add the values (42) and divide by the number of values (6).

Which way would data skew if the mean is greater than the median?

Right

You might be asked right/left skew on the TEAS.

What type of correlation exists if one variable increases while the other decreases?

Negative

You’ll need to recognize negative and positive correlation.