题目内容
34＋5=
[ ]
A．39
B．52
C．78
（
口算
(1)2．5×4= (2)34÷= (3)= (4)0.125×7×8=
(5)1÷= (6)= (7)0.3×0.3= (8)4-7÷6=
2.89÷0.34÷0.5 9.52÷1.7÷1.4???
32.85÷7.3+2.45 1.82÷0.52-1.78
= (3)
= (4)0.125×7×8=
= (6)
= (7)0.3×0.3= (8)4-7÷6=