Evaluating Algebraic Expressions

Addition

100

Evaluate x+5 when x=7

12

200

Evaluate 3.2+x when x=1.3

4.5

300

Evaluate 1/4 + y when y=2/4

3/4

400

Evaluate x + y + 10 when x=8 and y=6

24

500

Evaluate (x + y) + 4 when x=3.5, y=2.5

10

Subtraction

100

Evaluate 9−x when x=4

5

200

Evaluate 6.5 − y when y=2.1

4.4

300

Evaluate 5/6−1/6

4/6 or 2/3

400

Evaluate (20−x)−3 when x=7

10

500

Evaluate (x − y)−2.5 when x=15.5 and y=6

7

Multiplication

100

Evaluate 2x when x=4

8

200

Evaluate a x b when a=3 and b=5

15

300

Evaluate b x 3/4 when b = 8 

6

400

Evaluate 2a x c when a = 2 and c =3.5

14

500

Evaluate (u x v) x 1.5 when u = 3 and v = 4

18

Division

100

Evaluate x/2 when x=8

4

200

Evaluate x÷y, when x = 12 and y = 3

4

300

Evaluate x/(1/2) when x=3/4

3/2 or 1 1/2

400

Evaluate a/b when a = 9 and b =1.5

6

500

Evaluate (x ÷ y) ÷ 2when x=16 and y=4

2

Mix

100

Evaluate a + 3 x b when a=2 and b=4

14

200

Evaluate (x+5)÷y when x=6 and y=2

5.5 or 5 1/2

300

Evaluate (p−2) x q+1when p=5 and q=3

12

400

Evaluate m + n x 2−3 when m=4 and n=5

11

500

Evaluate (a x 2)+ b−7 when a=6 and b=10

15