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38 terms

place value

The value of the position of a digit in a number

remainder

The amount left over when one number is divided by another.

order of operations

PEMDAS

fraction to decimal

divide the numerator by the denominator

decimal to fraction

.9 = 9/10 say outloud

improper fraction

a fraction whose numerator is larger than the denominator

mixed number

A number represented by a whole number and a fraction

comparing fractions

find a common denominator - or change both to decimals

comparing decimals

Line up the numbers and fill in the missing zeros

add/subtract fractions (like denominators)

add/subtract the numerators and keep the denominator the same

add/subtract fractions (unlike denominators)

find common denominators first

add/subtract decimals

line up the decimal points, then add or subtract

dividing decimals

bring the decimal up, and add zeros if needed

multiplying decimals

Ignore the decimal point until the answer. Count the number of Decimal places in both factors. Use that number of decimal places to write the answer.

ordered pairs

Pairs of numbers (x,y) that can represent a point in a coordinate plane.

associative property

Changing the grouping of numbers will NOT change the value. For example: (7 + 4) + 8 = 7 + (4 + 8) also works with multiplication

distributive property

a(b + c) = ab + ac

expression

A mathematical phrase without an equal sign

equation

A mathematical sentence that contains an equals sign.

greater than

>

less than

<

greater than or equal to

comparison can be greater than or equal to

less than or equal to

comparison can be less than or equal to

edge of a prism

The line along which two surfaces of a solid meet.

face of a prism

a polygon that forms a surface of a prism

vertex

The points of a three dimentional shape

area of a parallelogram

A=bh

A=l*w

A=l*w

volume of a prism

V = Bh or V=l**w**h

surface area of a prism

the sum (+) of all the areas of the faces of a prism

mean

Average

median

Middle number

range

The difference between the highest and lowest scores in a distribution.

double bar graph

Compares two sets of categorical data

line graph

A graph that uses line segments to show changes that occur over time

cube

A prism with six square faces

estimate

A number that is not exact; a careful guess.

rounding

Expressing a number to the nearest thousandth, hundredth, tenth, one, ten, hundred, thousand, and so on as directed.

fraction remainder