Download absolute value a number`s distance from zero on a number line

absolute value
a number’s distance from zero on a
number line
|-5| = 5
|4| = 4
- |3| = -3
-|-2| = -2
integers
The set of real numbers consisting of the whole
numbers and their opposites
. . . -2, -1, 0, 1, 2, . . .
percent
• a ratio that calculates the parts per hundred
(e.g; 20% is 20 parts of 100)
algebraic expression
• A group of numbers, symbols, and variables
that express a single or series of mathematical
operations
3a
4x + 1
2w – 3y + 5z
algorithm
A set of step-by-step instructions for completing
a task that can be generalized to other tasks,
problems, or situations
Order of Operations
Making a peanut butter and jelly sandwich
quotient
• the answer to a division problem
product
• the result obtained when two or more
quantities are multiplied
approximation
A value or quantity that is close to, but not the
same as, the desired value.
3.9 x 4 ≈ 16
4.13 x 4.78 ≈ 20
proper fraction
• a fraction whose numerator is smaller than its
denominator
rational number
A number that can be expressed as a quotient of
two integers
¾=¾
.75 = ¾
1 = 6/6
-100 = -100/1
55% = 55/100
Changing a fraction to a percent
Convert the fraction to a decimal by division.
Then, move the decimal point two times to the
right
Changing a percent to a fraction
Put the percent over 100, then reduce.
50% = 50/100 = ½
35% = 35/100 = 7/20
75% = 75/100 = ¾
Greatest common factor
• The largest factor between two integers
Factors of 32 = 1,2,4,8,16,32
Factors of 24 = 1,2,3,4,6,8,12, 24
GCF is 8
Least common multiple
• Smallest multiple between whole numbers
• Multiplies of 6: 6, 12, 18, 24, 30, 36, …
• Multiples of 8: 8, 16, 24, 32, 40, 48, …
• LCM is 24
Whole number
• 0, 1, 2, 3, ……
Order of operations
P – Parentheses
E – Exponents
M/D – Multiplication or Division (which ever is
first from left to right)
A/S – Addition or Subtraction (which ever is first
from left to right)
“People Eat Many Doughnuts After School”
(7)(3) + 32/4 – 5(22) = 21 + 8 – 20 = 9
Prime number
A number who has only 1 and itself as factors
2, 3, 5, 11, 29
Composite number
A number that has 3 or more factors
Factors of 4: 1, 2, 4
Factors of 8: 1, 2, 4, 8
Factors of 25: 1, 5, 25
Prime factorization
variable
A letter or symbol used to represent a number.
3x + 1 = 60, x is the variable
3@ - 2 = 23, @ is the variable
substitute
significant
function
Integer
A positive or negative whole number
1, -5, 100, 35, -2
benefit
distribute
Process
available