Use the digits from 1 up to 9 and make 100.

Follow the rules.

=> Each digit should be used only once.

=> You can only use addition.

=> For making a number, two single digits can be combined (example, 4 and 2 can be combined to form 42 or 24)

=> A fraction can also be made by combining the two single digits (example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this ?

There are various solutions that one can come up with. Following are some of them.

1 + 2 + 5 + 4/6 + 7/3 + 89 =100

12 + 9 + 75 + 6/3 + 8/4 =100

2 + 95 +1/6 + 4/8 + 7/3 =100

24 + 57 + 8 + 6/3 + 9/1 =100

36 + 51 + 9 + 4/8 + 7/2 =100

5 + 91 + 3/2 + 6/8 + 7/4 =100