WED and Algebra

Which of the following is an expression?

• 14 + 5

• 13 - 4 = 9

• 45 > 42

• 31 + 8 = 39

Which of the following is an expression?

• 16 x 4

• 40 x 10 = 400

• 8 < 9

• 21 < 38

Which of the following is an equation?

• 45 x 2

• 33 + 8 = 41

• 3.1 > 2.9

• 18 - 3

Which of the following is an equation?

• $34\ \times\ 12$
  

• $45\div5=9$

• $23\ >\ 21$

• $33\ +\ 22$
  

Which of the following is an inequality?

•  $21\ \times\ 12$ 
  

•  $55\div5=11$ 

•  $44\ >\ 11$ 

• $33\ +\ 22$
  

Which of the following is an inequality?

• $53\ -\ 38$
  

• $87\times\ 3=261$

• $62\ <\ 72$

• $7\ +\ 11\ =\ 18$
  

4 + n = 11

What is n?

• 7

• 8

• 5

• 2

c - 5 = 20

What is c?

• 25

• 15

• 10

• 26

14 = 18 - f

What is f?

• 4

• 3

• 7

• 8

45 + h = 68

What is h?

• 23

• 26

• 113

• 125