two's
Five's
Seven's
Nines's
Twelve's
100

2+2

4

100

5+9

14

100

7+7

14

100

9*10

90

100

How many eggs are in a dozen?

12

200

2*5

10

200

5*5

25

200

7+4-5

6

200

9+9-8

10

200

If one dozen equals  12, then what is two dozen?

24

300

2+2+2-2

4

300

(5+8)-10

3

300

(7*11)+12

89

300

93

729

300

What is half of one dozen?

6

400

(2*2)+4

8

400

5y=60

y=12

400

7x=63

9

400

9a=108

12

400

123

1,728

500

2y=50

y=25

500

55

3,125

500

(7*9)+(7*8)-19

100

500

(9+9)*(4+9)-9

85

500

12b=36

3

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