题目内容

脱式计算(能简算的要简算)
11
10
-
1
4
-
3
4
1
8
×58+
1
8
×41+
1
8
2
5
×
1
5
+40%×
4
5
5
9
÷5+5÷
5
9
(1)
11
10
-
1
4
-
3
4

=
11
10
-(
1
4
+
3
4
),
=
11
10
-1,
=
1
10


(2)
1
8
×58+
1
8
×41+
1
8

=
1
8
×(58+41+1),
=
1
8
×100,
=
25
2


(3)
2
5
×
1
5
+40%×
4
5

=
2
5
×
1
5
+
2
5
×
4
5

=
2
5
×(
1
5
+
4
5
),
=
2
5
×1,
=
2
5


(4)
5
9
÷5+5÷
5
9

=
1
9
+9,
=9
1
9
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