the answer when I add
the answer when I subtract
the answer when I multiply
the answer when I divide
when you see this word in a problem, estimate!
a letter that stands for a mystery number
when we add, subtract, multiply, or divide. This can have numbers, variables, or both
an expression that has at least one variable
an expression that has no variables
Substitution Property of Equality
if two amounts are equal, I can replace one with the other
find the answer to an expression
a statement that is true for any numbers
only works for adding and multiplying. The order of my numbers will not change the answer. (Remember: moving)
only works for adding and multiplying. How the numbers are grouped does not change the answer. (Remember: who you are with)
when I add 0 to anything, I keep the same number
when I multiply 1 by anything, I keep the same number
Multiplicative Property of Zero
0 times anything is 0
a math sentence that has an equals sign
might or might not be true depending on what number we put in
if one number equals a second number, the second number equals that first number
If a=b, b=a
if the first number equals the second number and the second number equals the third number, then the third number equals the first number
If a=b and b=c, then a=c
where we plot points. It has an x-axis and a y-axis
the horizontal (↔) number line on a graph
the vertical (↕) number line on a graph
the point where the x-axis and the y-axis intersect: (0,0)
the numbers that tell me where a point is located on the graph
the first number in an ordered pair. Shows how far over the point is
the second point in an ordered pair. Shows how far up the point is
a set of ordered pairs
the x-coordinates in a relation
the y-coordinates in a relation
a graph where we plot ordered pairs on a coordinate plane
as one thing goes up, the other goes up
as one thing goes up, the other goes down
one does not affect the other
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