Combining Like-terms

vocabulary

100

What does E stand for in PEMDAS? 

exponents

200

What is an example of two like-terms? 

ex: 2x and 32x

300

What does it mean to discriminate? 

to place certain objects in separate groups

400

What is another way to remember PEMDAS? 

Please Excuse My Dear Aunt Sally

500

What is an expression? 

An expression is a complete sentence with a minimum of two numbers and at least one math operation 

addition

100

2A + 2B + 2C

2A + 2B + 2C 

200

5x + 9x + 3y

14x + 3y

300

23c + 7b + 7c + 3a

30c + 7b + 3a

400

13x + 24x + 7y + 8y + 67xy

37x + 15y + 67xy

500

4xy² + 28x + 12x + 7y + 8xy² + 2y + 8x

12xy² + 48x + 9y

subtraction

100

3a - 2a 

a

200

5xy - 3xy

2xy

300

45x - 13y - 10x - 10y

35x - 3y

400

3x - 6 - 2x - 3

x - 3

500

10x² - 7xy - 3xy - 7x² - 27 - 7x - 3

3x² - 4xy - 7x - 24 

not like-terms or like terms

100

a & b

Not like terms

200

0.5xy & 300xy

like terms

300

80xy & xy

like-terms

400

0.3x² & x³

not like terms

500

3x²y & 3xy²

not like terms 

order of operations

100

2x² + 2x + x² - 1x 

3x² + x

200

4x + 7x(2x) 

18x

300

(21/7) + 4x - 2x

3 + 2x

400

(10a - 4a)² + 6a 

42a

500

(24a-2a) + 13a² - 2a + 25a² - 3ab 

38a² + 20a - 3ab