
Write Expression
Presentation
•
Mathematics
•
7th Grade
•
Hard
Joseph Anderson
FREE Resource
13 Slides • 20 Questions
1
I can write equivalent expressions
and Combine like terms
2
Algebraic expressions are made up of
Coefficient
Variable
Constant
3
Multiple Choice
Identify the constant in 5x - 3
5
x
3
4
Multiple Choice
Identify the coefficient in 5x - 3
5
x
3
5
Multiple Choice
Identify the variable in 5x - 3
5
x
3
6
Multiple Choice
Identify the constant in 25a - 87
25
a
87
7
Multiple Choice
Identify the variable 15y + 16
15
y
16
8
Multiple Choice
Identify the coefficient in 9k + 15
9
k
15
9
10
11
Like Terms have something in common
they may have the same variable
or they may be constants
In either case it means we can add/subtract them
12
3a + 2a = 5a
13
Multiple Choice
9x + 4x
13x
94x
36x
14
Multiple Choice
9x - 4x
94x
5x
36x
15
Multiple Choice
8r + 12r
812r
96r
20r
16
Multiple Choice
18r - 12r
1812r
6r
20r
17
3a + 2b does not equal 5ab
18
Do you see which are like terms?
19
you can add the x terms together and the constants together
20
Multiple Choice
3x + 7x
37x
21x
10x
21
Multiple Choice
6 + 3
63
18
9
22
Multiple Choice
3x + 7x + 6 + 3
10x + 63
10x + 9
10x + 18
19x
23
How many different kinds of terms do you see?
24
How many kinds of terms do we have?
25
Multiple Choice
How many kinds of terms are there?
0
1
2
3
26
Multiple Choice
Name the 3 kinds of terms you see?
x terms
y terms
constants
x terms, y terms and constants
27
Let’s rearrange the expression such that similar terms are adjacent or close to each other. This allows us to have a “laser” focus on which terms to add or subtract.
28
Rearrange so like terms are next to each other
identify the like terms (use color)
re-write the expression by taking the sign to the left of the term.
29
Multiple Choice
Rearrange so like terms are next to each other
9y -2y -4x -3x +3 -5
9y -4x -3x +3 -5 -2y
9y -4x -5 -3x +3 -2y
30
Multiple Choice
Combine like terms
9y -2y -4x -3x +3 -5
9y -2y -4x -3x -2
9y -2y -7x -2
7y -7x -2
31
Multiple Choice
Find the sum of 2x + 1 and 5x.
2x + 1 + 5x
5x + 2x + 1
7x + 1
32
Multiple Choice
Find the sum of -3a + 2 and 5a – 3
-3a + 2 + 5a - 3
-3a + 5a +2 -3
2a + 2 -3
2a -1
2a + 1
33
Multiple Choice
Find the product of 2x and 3
2x(3)
6x
2x * 3
I can write equivalent expressions
and Combine like terms
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