问题
解答题
计算下面各题 8.6×8
34÷
|
答案
8.6×8
+8.6÷2 5
,5 8
=8.6×8
+8.6×2 5 8 5
=8.6×(8
+2 5
),8 5
=8.6×10,
=86;
÷[1 4
-(7 8
+3 8
)],1 4
=
÷[1 4
-7 8
],5 8
=
÷1 4
,2 8
=
×1 4
,8 2
=1;
×12×5 2
,4 3
=30×
,4 3
=40;
34÷
,53 54
=34×
,54 53
=34
.34 53
故答案为:86;1;40;34
.34 53