下面各题能简算的要简算.45-(57-12)=14-37+(34-47)=11-710-310=78-49+18=49+23+59-13=1116-(516+38)=-数学

题目简介

下面各题能简算的要简算.45-(57-12)=14-37+(34-47)=11-710-310=78-49+18=49+23+59-13=1116-(516+38)=-数学

题目详情

下面各题能简算的要简算.
4
5
-(
5
7
-
1
2
)=
1
4
-
3
7
+(
3
4
-
4
7
)=
11-
7
10
-
3
10
=
7
8
-
4
9
+
1
8
=
4
9
+
2
3
+
5
9
-
1
3
=
11
16
-(
5
16
+
3
8
)=
题型:解答题难度:中档来源:不详

答案

(1)class="stub"4
5
-(class="stub"5
7
-class="stub"1
2
),
=class="stub"4
5
-class="stub"5
7
+class="stub"1
2

=class="stub"56
70
-class="stub"50
70
+class="stub"35
70

=class="stub"41
70


(2)class="stub"1
4
-class="stub"3
7
+(class="stub"3
4
-class="stub"4
7
),
=class="stub"1
4
-class="stub"3
7
+class="stub"3
4
-class="stub"4
7

=(class="stub"1
4
+class="stub"3
4
)-(class="stub"3
7
+class="stub"4
7
),
=1-1,
=0;

(3)11-class="stub"7
10
-class="stub"3
10

=11-(class="stub"7
10
+class="stub"3
10
),
=11-1,
=10;

(4)class="stub"7
8
-class="stub"4
9
+class="stub"1
8

=(class="stub"7
8
+class="stub"1
8
)-class="stub"4
9

=1-class="stub"4
9

=class="stub"5
9


(5)class="stub"4
9
+class="stub"2
3
+class="stub"5
9
-class="stub"1
3

=(class="stub"4
9
+class="stub"5
9
)+(class="stub"2
3
-class="stub"1
3
),
=1+class="stub"1
3

=1class="stub"1
3


(6)class="stub"11
16
-(class="stub"5
16
+class="stub"3
8
),
=class="stub"11
16
-class="stub"5
16
-class="stub"3
8

=class="stub"3
8
-class="stub"3
8

=0.

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