题目内容

直接写数对又快:
(1)47.23-(7.23+5.89)=
(2)
11
10
-
1
4
-
3
4
=
(3)12.5×8.8÷11=(4)(
2
3
+
1
2
)×12=
(5)
2
5
×
1
5
+40%×
4
5
=
(6)
5
9
÷5+5÷
5
9
=
(7)99+999+9999+99999=(8)
3
8
×1
1
4
+1.25×
5
8
+125%=

(1)47.23-(7.23+5.89)=34.11,
(2)
11
10
-
1
4
-
3
4
=
1
10

(3)12.5×8.8÷11=10,
(4)(
2
3
+
1
2
)×12=14,
(5)
2
5
×
1
5
+40%×
4
5
=
2
5

(6)
5
9
÷5+5÷
5
9
=9
1
9

(7)99+999+9999+99999=111096,
(8)
3
8
×1
1
4
+1.25×
5
8
+125%=2.5.
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