Math Steps Unit 2
Terms
undefined, object
copy deck
- variable
- a letter used to represent a number
- zero property of additon
- if you add zero to any number the sum is that number 7+0=7
- parenthesis
-
( )
in math means do what is inside these first
- commutative property of addition
-
the quality of additon that states that the order of the addends does not change the sum
3+4=4+3 - number sentence
-
a statement showing how nbumbers in an operation are related.
- addends
- numbers that you add in addition
- estimate
- adding or subtracting rounded numbers
- sum
- answer in addition
- open sentence
-
a number sentence that contains a variable
x+6=10 - difference
- answer in subtraction
- rounding
- changing the number to the nearest 10, 100, 1000, etc
- inverse operation
-
the opposite operation:
the opposite of addition is subtraction - algebra
- an area of math that uses variables or letters to represent numbers
- inverse of addition
-
subtraction
- associative property of addition
-
the property of addition that states that the way you group the addends does not change the sum
1+(2=3)=(1+2)+3