vocabulary
the language of symbols including variables
what is algebra?
4 x 9 = 9 x 4
what is the commutative property of multiplication?
evaluate 16 + b if b = 25
what is 41?
(11 + 19) + [5 + (12 + 13)]
what is 60?
a symbol, usually a letter, used to represent a number
what is a variable?
the way in which three numbers are added or multiplied does not change their sum or product
what is the associative property?
evaluate 12r if r=1/6
what is 2?
solve: 10 – 11 x (–1)2
what is -1?
an expression that contains at least one variable and at least one operation
what is an algebraic expression?
the sum of an addend and 0 is the addend. the product of a factor and 1 is the factor
what is the identity property?
evaluate z-m if z=9 and m=4
what is 5?
solve:(2 + 2)² – 1
what is 15?
to find the value of an algebraic expression
what is evaluation?
the sum of an addend and its additive inverse is 0. the product of a factor and its multiplicative inverse is 1.
what is the inverse property?
evaluate 4m - 2 if m=7
solve:(–1) + (2)² x (–3)
what is -13?
a term without a variable
what is a constant?
3(20 + 15) = 3 x 20 + 3 x 15
what is the distributive property?
evaluate 3r² if r=2
what is 36?
solve: –1 + 2 x –3
what is -7?