Expressions Review

Simplifying Expressions

100

4 - 6m + 2n - 3m + n

-9m + 3n + 4

200

-2y - 6 + 4y - x - 3

-x + 2y - 9

300

15x² + 23 + 8x - 4x²

11x² + 8x + 23

400

-7g + 2³ - 3g - 8 + 7h + 4g - h

-6g + 6h

500

5y³+ 4y⁵ + (-3y³) - 6y² - (-8) + (-7y²) + 11 - 6y³

4y⁵ - 4y³ - 13y² + 19

Evaluate Expressions

100

3m² - 2m ; when m=4

40

200

3 - x(1 - 2x) ; when x=2

9

300

4p(q + 2) - q³ ; when p=3, q= -1

13

400

3x² - 4(7 + 2y²) + 2 ; where x=2, y= -3

-86

500

1/5 (m² + n³) - 2 ; when m=3, n= -4

-13

Parts of Expression

100

What is the 2nd term: 

a - 7b -20c

-7b

200

What are the coefficient(s)? 

4x - y

4 , -1

300

What are the variables in the expression: 

7p – pc + 3p² – 2 

p, pc, p²

400

Which pair shows like terms? Explain

A. 6x and 6xy
B. 3y and −10y
C. x² and x
D. 2a and 2b

• 
  

B, because both terms have the same variable and exponent (just y).

500

Expression:
4.6x + 6.2y − 5.12

Name all three parts of the expression (variable terms and constant), and identify their coefficients.

• Variables: x, y

•  Coefficients: 4.6, 6.2

• Constant: –5.12

Writing Expression

100

sum of 23 and a number x

23 + x

200

the difference of 36 and a number h

36 - h

300

subtract a number m from 45

45 - m

400

11 less than the product of 47 and a number e

47e - 11

500

quotient of 2 times a number g and 9

2g/9

Tie-breaker

300

5 + 2(-3² - 4 + 2)

-17

400

25 + 3 |9 - 15| - 3³

16