As a product of its prime factors: 2*2*5*5 = 100
2468101214161820222426283032343638404244464850525456586062646866707274767880828486889092949698100
-85
3.8197 and 26.1803 (approx).
10. As in 10 + 10 = 20 and 10 * 10 = 100.
-58.2843 and -1.7157 (approx).
7.29844 and 13.70156 (to 5 dp)
80
20, 40, 60, 80, 100 and so on.
120
37.32 2.68
2200
4 and 25