100
(3/4) + (1/6) =
11/12
200
(-1/4) + (-1/3) =
-5/8
200
(7/11) ∙ (6/3) =
42/33
300
(1/5) - (-1/3) =
8/15
300
(5/6) ∙ (5/8) =
25/48
400
(2/10) ∙ (5/12) =
1/12
400
(√4) / (4√5) =
1/(2√5)
500
(-1/3) - (-1/9) =
-2/9
500
(200/300) ∙ (150/100) =
1
500
(√4) / (2√20) =
1/(2√5)