Simplifying Expressions by CLT
Presentation
•
Mathematics
•
7th Grade
•
Practice Problem
•
Medium
Michele Vallero
Used 4+ times
FREE Resource
11 Slides • 22 Questions
1
Adding and Subtracting Rational Numbers
With Ms. Vallero
2
Fill in the Blanks
3
Multiple Choice
-19 -10
4
Multiple Choice
6 - (-2)
8
4
-4
-8
5
Multiple Choice
-25 - (-2)
23
-23
27
-27
6
Open Ended
2 − (−2)
7
Open Ended
(−1) − 10
8
Multiple Choice
9
Multiple Choice
10
Multiple Choice
11
Vocabulary for Simplifying Expressions
12
Variable
A letter that stands for an unknown number.
VARIABLE TERM refers to the entire term that contains the variable (Ex: -8x)
When there is no number in front of the variable, there is a 1 there. (Ex: y is the same as 1y)
13
Expression
An expression contains numbers, variables, and operation symbols...NO EQUAL SIGN
14
Multiple Select
Which of these can be found in an expression?
Numbers
Operations
Equal Sign
Variables
15
Terms
16
Coefficient
17
18
Multiple Choice
What is/are the coefficient(s) of
2x + 9 - 7x?
2, -7
2x, -7x
19
Constant
A number NOT connected to a variable.
Always include the sign before it .
Constants can be whole numbers, decimals, or fractions.
All constants are like-terms!
20
Multiple Select
What are the constants in the following problem? (There may be more than one.)
2b2+1−6a+4.2
2
1
-6
4.2
21
Like-Terms
22
Multiple Select
Which of the following are examples of like-terms?
3b & b
6x2 & 6x
3 & 4.5
6xy & 6x2y
23
Combining Like Terms
Use the signs in front of the terms.
Only terms that share the same variable (and are raised to the same power) can be combined.
Always ADD the coefficients together of like terms, but remember to look at the signs before it!
24
Multiple Choice
v + v + v + v + v?
25
Multiple Choice
Simplify by combining like terms:
-6k + 7k
k
-k
13k
-13k
26
Multiple Choice
Simplify by combining like terms:
-r -10r
11r
-11r
9r
-11
27
Fill in the Blanks
28
Multiple Choice
Combine Like Terms
a - 2 + 1 + 4a
5a + 3
5a -1
-7a
5a - 3
29
Multiple Choice
Simplify this expression by combining the like-terms:
2x+7−4x
5x
−2x
−2x+7
−13x
30
Multiple Choice
Simplify the expression by combining like-terms:
−3y+1+9y−4
3y
6y−3
12y+3
31
Terms with exponents
Only variables with the same exponent are like terms.
x and x2 are NOT like terms.
x and xy are NOT like terms.
x and y are NOT like terms.
x2 and y2 are NOT like terms.
Always ADD the coefficients together of like terms, but remember to look at the signs before it!
32
Multiple Choice
4x2 - 3x + 11 -2x
33
Multiple Choice
4x2 – 2x2 + 2y + 6y2 – y + x2
Adding and Subtracting Rational Numbers
With Ms. Vallero
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