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13 Cards in this Set
- Front
- Back
VARIABLE
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Any LETTER or SYMBOL
used to represent a NUMBER ...LETTERS are most commonly used The letter A in this algebraic expression is a VARIABLE... 3A = 6 |
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EXPRESSION
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A math EXPRESSION
contains at least 2 NUMBERS OR LETTERS and an OPERATION exam: a + b 1 + 2 a and b are letters (variables) 1 and 2 are numbers No EQUAL SIGN (=) in an EXPRESSION a + b expression a + b = NOT expression |
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ALGEBRAIC EXPRESSION
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LETTERS or NUMBERS
or BOTH - and an OPERATION (+, -, x,÷) exam: A + 3 |
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NUMERICAL EXPRESSION
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NUMBERS only with OPERATION
no letters exam: 2 + 4 numerical b – algebraic c 6 ⋅ 8 numerical 3a algebraic |
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2 kinds of math
EXPRESSIONS |
1 - ALGEBRAIC EXPRESSION
2 - NUMERICAL EXPRESSION |
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To EVALUATE AN EXPRESSION ... what do
you do? |
You find a NUMERICAL
VALUE - a NUMBER as an ANSWER 2 + 2 = 4 You EVALUATED the EXPRESSION 2 + 2 and came up with the ANSWER 4 |
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ADDITION
words or symbols that mean to add |
( + )
add increase by more than total extend sum |
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SUBTRACTION
words or symbols that mean to subtract |
( - )
subtracted by subtracted from take away decreased by less than (flip the order) difference |
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MULTIPLICATION
words or symbols that mean to multiply |
( x)
( ∙ ) of double (2) triple (3) twice (2) product |
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DIVISION
words or symbols that mean to divide |
( ÷ )
( / ) divided by split ( ÷ 2) half ( ÷ 2) thirds ( ( ÷ 3) into quotient |
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EQUATION
words or symbols that mean to find an equal |
( = )
equals equal to comes to is is the same as is as much as |
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POWERS
words or symbols that mean how many times something is increased |
exponent #s
exponent numbers 2nd power (2) 3rd power (3) squared (2) cubed (3) |
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EXPONENTS
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numbers that are smaller in size and are located slightly above the main number or letter - which tell how many times something is increased
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