A
B
C
Mystery 1
Mystery 2
100

x=4 

x + 2 

6

100

x=20

x - 10 

10

100

x=2

x + 32

34

100

x = 7

100x

700

100

How many bones does a shark have?

none

200

x=10

x + 5 

15

200

x= 610

2x

1220

200

x=30

x - 12 

18

200

x = 12

100 - x

88

200

What is a baby kangaroo called?

Joey

300

x=7

16 - x

9

300

x=13

x + 10 

23

300

x=14

y = 10

x + y

24

300

b = 6

c = 10

b x c

60
300

What are the names of Harry Potter’s parents?

James and Lily

400

x=15

10x 

150

400

x=50

x ÷  2

25

400

x= 20

3x

60

400

x = 4

x3

64

400

What is the largest country in the world?

 Russia

500

x=11

x + x 

22

500

x=12

4x + 5

53

500

x=5

5x - 2

23

500

120 x 4

480

500

How many sides does a hexagon have?

6