25) 2%, 2 x 10^(-1), 0.2 with the bar on top, 7/25, 4^(-1), square root of 2
26) 51.2%, 35/2, 4.8 x 10^2, 8^3, 3^6, 1.7 x 10^3
27) 5^(-2), 5%, 1.25 x 10^(-1), 1/2, square root of 5, cube root of 125
28) 7.81 x 10^1, square root of 61, cube root of 343, 0.78, 7/9, 8%
29) 2/5, square root of 1/9, 0.3, 3^(-2), 3.4 x 10^(-2), 3%
I can't fully see 30
