Question

Calculati: a) (8,75-3,41)*10+10,3*4,2:0,3; b) 3,2*(4,8:0,6+1,34)*0,4+(4,115+5,743)*2.

Answer 1

$a)(8.75 - 3.41) \times 10 + 10.3 \times 4.2 \div 0.3$

$= 5.34 \times 10 + 43.26 \div 0.3$

$= 53.4 + 144.2$

$= 197.6$

$b)3.2 \times (4.8 \div 0.6 + 1.34) \times 0.4 + (4.115 + 5.743) \times 2$

$= 3.2 \times (8 + 1.34) \times 0.4 + 9858 \times 2$

$= 3.2 \times 9.34 \times 0.4 + 19716$

$= 29.888 \times 0.4 + 19716$

$= 11.9552 + 19716$

$= 19727.9552$