问题
解答题
(100+10)÷(10-5)=______
100-(10+10)÷5=______
100÷10+10÷5=______
100-(10÷10+5)=______
A.12 B.22 C.94 D.96.
答案
(1)(100+10)÷(10-5),
=110÷5,
=22,
(2)100-(10+10)÷5,
=100-20÷5,
=100-4,
=96;
(3)100÷10+10÷5,
=10+2,
=12;
(4)100-(10÷10+5),
=100-(1+5),
=100-6,
=94.
故选:B,D,C,A.