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undefined
means division by zero
real
A number that can have decimal or fractional parts.
imaginary
involve the square root of a negative number
integer
All whole numbers (both positive and negative) and zero.
Non integer
Non integer
rational
a number that can be expressed as a ratio of two integers
irrational
A number that can be expressed as a decimal but not a fraction
adding/ subtracting signed numbers
add a positive and a negative
multiplying/ dividing signed numbers
attach a negative sign if there were originally an odd number of negatives
PEMDAS
Parentheses, Exponents, Multiplication, Division, Addition, Subtraction
Parentheses, Exponents, Multiplication, Division, Addition, Subtraction
PEMDAS
absolute value
The distance a number is from zero on a number line. ALWAYS POSITIVE
counting consecutive integers
To count consecutive integers, subtract the smallest from the largest and add 1
