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Missing Numerators
Missing Denominators
Small Numbers
100

What is    5/10 =  ?/50

  5/10 = 50/100

100

What is  1/4 = 6/?

1/4 = 6/24

100

What is  4/? = 28/70

4/10 = 28/70

200

What is   2/3 = ?/30

2/3 = 8/12

200
What is  1/? = 10/20

1/2 = 10/20

200

What is  2/3 = ?/27

2/3 = 18/27

300

What is  7/9 = ?/45

7/9 = 49/63

300

What is  8/? = 56/63

8/9 = 56/63

300

What is  7/12 = ?/24

7/12 = 14/24

400

What is  1/2 = ?/7/14

1/2 = 6/12

400

What is  82/? = 574/700

82/100 = 574/700

400

What is  1/? = 10/50

1/5 = 10/50

500

What is  43/50 = ?/400

43/50 = 215/250

500

What is  29/50 = 203/?

29/50 = 203/350

500

What is 1/8 = ?/64

1/8 = 8/64