题目内容
75-5=
[ ]
A.0
B.50
C.70
(1)0.75
(2)75
(3)7.5
(4)750
0.75+2.5= 6.5-5.6= 0.16×0.5=?
1.8÷30= 1.5÷0.15= 1÷0.1-0.1÷1=