脱式计算,能简算的要简算711+35+411+2574-611-511.-数学

题目简介

脱式计算,能简算的要简算711+35+411+2574-611-511.-数学

题目详情

脱式计算,能简算的要简算
7
11
+
3
5
+
4
11
+
2
5

7
4
-
6
11
-
5
11
题型:解答题难度:中档来源:不详

答案

(1)class="stub"7
11
+class="stub"3
5
+class="stub"4
11
+class="stub"2
5

=(class="stub"7
11
+class="stub"4
11
)+(class="stub"3
5
+class="stub"2
5
),
=1=1,
=2;

(2)class="stub"7
4
-class="stub"6
11
-class="stub"5
11

=class="stub"7
4
-(class="stub"6
11
+class="stub"5
11
),
=class="stub"7
4
-1,
=class="stub"3
4

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