1. 5 word prediction. guess the meanings of the following words: variable, expression, base,...
TRANSCRIPT
Warm up
1. 5 word prediction. Guess the meanings of the following words: Variable, expression, base, constant, & factor.
EQ
Why is it important to understand the “language” of mathematics?
GSE Unit 1
Definitions
Identifying PartsGuided NOTES
Algebraic Expression Can have variables, numbers,
addition, subtraction, multiplication, division, parenthesis, square roots, exponents…
Examples: 2
3 2
5 7
5
xx
b c d
xy
Variable Symbols or letters used to represent
an unknown
Examples:x
Term How many items are being added,
subtracted, divided
Examples:2
2
5 2 3
2
a xy
P xa b
3
4
Like Terms Same variable raised to the same
power
Examples:2 2
2 2
5 and 8
7 and 22y
x y x y
y
Coefficient The number in front of a variable
Examples:
3 2
123
9
xy
xy z
x
123
9
1
Exponent The number up in the air next to a
base The number of times you multiply
something times itself
Examples:3
12
4
2
3 7
x
y
3
12
4
Base What the exponent sits on The part that has been raised to a
power
Examples:3
12
4
2
3 7
x
y
2
x
y
Constant A number that has no variable It can be positive or negative
Examples:
2 4
42
3 5
5 3 8
x
x y
-42
5
-8
Factors Items that are being multiplied
together Can be numbers, variables,
parenthesis Examples:
6
9
2 3
3 9
xy
x y
z
1 and 6…. Or 2 and 39 and x and y
(x + 2) and (y – 3)
3 and (z – 9)
Order of Operations Simplify inside parenthesis Take care of exponents In order from left to right, multiplication
or division In order from left to right, addition or
subtraction
Examples: 25 3 2 1 4 -18
Translations
ADDITION
Sum Plus Add More Than Increased Together
SUBTRACTION
Difference Minus Decreased Less Than (swaps the order)
Take away
DIVISION
Quotient Half Divide by
MULTIPLICATION
Product Twice Double Triple Times
EXPONENTS
Square Cubed To the power of Raised to a power
TranslateThe sum of a number and 10
x + 10
TranslateThe product of 9 and x squared
9x2
Translate9 less than g to the fourth power
g4 – 9
Translate
8 + 3xEight increased by three times x
Translate and Solve
2. Four times a number plus 10 minus two times the same number is 6.
1. Five times a number increased by 5 is the same as 3 times the same number decreased by 7.
Class Work
Writing an Expression Practice Worksheet
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HOMEWORK
Writing an Expression Worksheet
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