1213+719+113=14+(65-720)=56+14+23=-数学

题目简介

1213+719+113=14+(65-720)=56+14+23=-数学

题目详情

12
13
+
7
19
+
1
13
=
1
4
+(
6
5
-
7
20
)
=
5
6
+
1
4
+
2
3
=
题型:解答题难度:中档来源:不详

答案

(1)class="stub"12
13
+class="stub"7
19
+class="stub"1
13

=(class="stub"12
13
+class="stub"1
13
)+class="stub"7
19

=1+class="stub"7
19

=1class="stub"7
19


(2)class="stub"1
4
+(class="stub"6
5
-class="stub"7
20
),
=class="stub"5
20
+class="stub"24
20
-class="stub"7
20

=class="stub"29
20
-class="stub"7
20

=class="stub"11
10


(3)class="stub"5
6
+class="stub"1
4
+class="stub"2
3

=class="stub"10
12
+class="stub"3
12
+class="stub"8
12

=class="stub"13
12
+class="stub"8
12

=class="stub"7
4

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