题目内容
0.4+0.6=
[ ]
A.0.32 B.0.98
C.0.23 D.1
(1)2.4-0.6÷(1.5+0.5)
=
(2)2.4-(0.6÷1.5+0.5)
(3)(2.4-0.6)÷1.5+0.5
(4)2.4-0.6÷1.5+0.5
A.2.5
B.1.7
C.1.5
D.2.1