Пусть a = 2,4*10^3 , b = 1,2*10^2
Вычислите a+b, a-b, a*b и a:b

a +b =2.4*10^3 +1.2*10² =1.2*10²(2*10 +1) =1.2*100*21 =120*21 =2520


a -b =2.4*10^3 - 1.2*10² =120*(2*10 -1) =120*19 =2280


a *b =2.4*10^3 *1.2*10² =2.4*1.2*10^5 =2.88*100000 =288000


a : b =(2.4*10^3) /(1.2*10²) =2*10 =20