问题
解答题
30-0.06+9.92
108÷(0.45÷0.9)
(0.25+12.5)×4
5.2+9.8+2.2+4.8.
答案
(1)30-0.06+9.92,
=29.94+9.92,
=39.86;
(2)108÷(0.45÷0.9),
=108÷0.5,
=216;
(3)(0.25+12.5)×4,
=0.25×4+12.5×4,
=1+50,
=51;
(4)5.2+9.8+2.2+4.8,
=(5.2+9.8)+(2.2+4.8),
=15+7,
=22.