1) 37,3 + 21,7 = 59
2) 59 • 13 = 767
3) 767 + 8688 = 9455
3) 9455 : 31 = 305
4) 305 - 196 = 109
11/20+7/15=61/60=одна целая одна шестидесятая.
2/5 * 95 = 38
4*23=92
38<92
100 = 10^2
100^n = (10^2)^n = 10^(2n)
0.01 = 10^(-2)
0.01 * 100^(n+3) = 10^(-2) * (10^2)^(n+3) = 10^(-2+2n+6) = 10^(2n+4)
0.01^n : 10^(2-2n) = (10^(-2))^n : 10^(2-2n) = 10^(-2n-2+2n) = 10^(-2)