Substitution

A

100

x=4 

x + 2 

6

200

x=10

2x + 5 

25

300

x=7

6x - 10

32

400

x= 7 

10x - 25 

45

500

x=11

x² - 1

120

B

100

x=20

x - 10 

10

200

x= 6

2x -  12

0

300

x=7

5x + 10 

45

400

x=50

2x - 72

28

500

x=12

y = 9

3x + 2y

54

C

100

x=2

12x

24

200

x=10

3x - 12 

18

300

x=9

7x - 22 

41

400

x= 20

3x - 17

43

500

x=15

y = 3

2x + y²

39

Mystery

100

How many planets are in our solar system?

8

200

What do caterpillars turn into?

Butterflies

300

What type of fish is Nemo?

A clownfish

400

On the farm, what is a kid?

A baby goat

500

What food do pandas eat?

Bamboo

Algebra

100

Simplify 

4 x y 

4y

200

Simplify 

y x y

y²

300

Simplify 2y + 3y - y

4y

400

Simplify 

4c + 9b + 10c - 2b

14c + 7b

500

Expand

5(2c + 9)

10c + 45