Flash Cards

Perimeter

add up all the sides

add

Area

use the formulas

multiply

Rectangle (Square)

Triangle

A lw 2A s

1

2A bh

Volume

use the formula

multiply

V lwh

Slope

rise

run

y mx b

Positive Slope

the line goes up

Negative Slope

the line goes down

Parallel Lines

have the same …

SlopeSlopeSlopeSlopeSlopeSlopeSlopeSlopeSlopeSlope

y mx b

#y x

#y x

2#y x

2#y x

3#y x

3#y x

Mean

average

Add up all the numbers and divide by the # of numbers

Mode

most

Find the number that appears the most.

Median

middle

Put the numbers in order, then find the middle number.

Reciprocal

flip

DOES NOT CHANGE THE SIGN!

Opposite

change the sign.

The opposite of a positive is negative

The opposite of a negative is positive

%

percent

convert to decimal and multiply

move the decimal 2 places to the left

Scientific Notation

positive # is a big #

##.# 10negative # is a small #

must be bigger than 1 and

SMALLER than 10

move decimal to the RIGHT

move decimal to the LEFT

Square Root symbol

What # times itself equals the inside?

25 5 100 10

85

between 3 and 412 between 9 and 10

Absolute Value symbol

makes the number positive

NEVER negative

x

when solving, there will be 2 answers

Equations or Inequalities

Plug it in, plug it in…

Positive correlation (relationship)

Negative correlation (relationship)

No correlation (relationship)

Probability

write as a fraction

What you wantTotal

Sum addition

Difference subtraction

Product multiplication

Quotient division

2 2 2a b c Pythagorean Theorem

Tells us the lengths of the sides

3, 4, 5Whenever you see a RIGHT

triangle, think these numbers.

3, ?, 5Whenever you see a RIGHT

triangle, think these numbers.

3, 4, ?Whenever you see a RIGHT

triangle, think these numbers.

?, 4, 5Whenever you see a RIGHT

triangle, think these numbers.

3, 4, 5?, 8, 109, 12, ?

12, ?, 20..., ..., ...

Whenever you see a RIGHT triangle, think these numbers.

Whenever you see a RIGHT triangle, think these numbers.

Whenever you see a RIGHT triangle, think these numbers.

Whenever you see a RIGHT triangle, think these numbers.

6, 8, 109, 12, 15

12, 16, 20

5, 12, 13Whenever you see a RIGHT

triangle, think these numbers.

5, 12, ?Whenever you see a RIGHT

triangle, think these numbers.

?, 12, 13Whenever you see a RIGHT

triangle, think these numbers.

5, ?, 13Whenever you see a RIGHT

triangle, think these numbers.

5, 12, 1310, ? , 2615, 36, ?..., ..., ...

Whenever you see a RIGHT triangle, think these numbers.

Whenever you see a RIGHT triangle, think these numbers.

Whenever you see a RIGHT triangle, think these numbers.

10, 24 , 2615, 36, 39

Reflectionthink mirrorWhere is the mirror?

y-axis

Reflectionthink mirrorWhere is the mirror?x-axis

Congruent

Same ShapeSame Size

Triangle interior angles add to

Online Demo

180

60 90 30 180 70 80 30 180