Question

A) 20,14 x 102 - 20,14 : 0,5

B) 0,8 x 9,6 + 1,6 x 2

Answer 1

\(a,20,14\times102-20,14:0,5\\= 20,14\times102-20,14\times2\\ =20,14\times\left(102-2\right)\\ =20,14\times100\\ =2014\\ b,0,8\times9,6+1,6\times2\\ =0,8\times1,6\times6+1,6\times2\\ =1,6\times\left(6+2\right)\times0,8\\ =1,6\times8\times0,8\\ =12,8\times0,8\\ =10,24\)