36 and 64
81 and 9 if you add them. 4 and 25 if you multiply them.
20
92
An example of two numbers which add together to make 100 are 47 and 53.
36 and 64
They are simply: 100+25 = 125
81 and 9 if you add them. 4 and 25 if you multiply them.
20
The two square numbers that add up to 225 are 144+81 = 225
You can do it with two (36 + 64) you can do it with three if you include zero but there aren't three distinct square numbers that add up to 100 in that range. 1, 4, 9, 16, 25, 36, 49, 64, 81, 100
92
The two square numbers which add up to 13 are 9 (which is equal to 3 squared), and 4 (which is equal to 2 squared).
25 and 100
An example of two numbers which add together to make 100 are 47 and 53.
62.5 and 37.5
121