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Pre-Algebra ch.1/smothers

Terms

undefined, object
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what is the absolute value: l-7l
7
true or false: 5-5 is a numerical expression?
true
define: variable
A letter that stands for a number
simplify: 4+15divided by3
9
(-)-(-)=
(-) + (+)= answer varies
(+) x (+)=
+
absolute value
-l-102l
(-)+(-)=
-
what is the order of operations?
multiply and divide first and then add and subtract.(pemdas-please excuse my dear aunt sally)
(+)+(+)=
+
define:evaluate
a variable expression, you first replace each variable with a number.
true or false: c-5 is a numerical expression?
false it a variable expression
(-)+(+)=
depends on the numbers.......if the positive is bigger than the negative than the answer is postive but if the negative is bigger than the positive then it's negative.
(+) x (-)=
+
define: Variable expression
A mathmatical phrase that uses variables, numerals, and operation symbols
simplify: 4y-15=? y=9
21
define: intergers
the whole numbers and their opposites.

Deck Info

17

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