脱式运算,能简便的要用简便方法计算.45-1115+31014+13+14+231-56-16.-数学

题目简介

脱式运算,能简便的要用简便方法计算.45-1115+31014+13+14+231-56-16.-数学

题目详情

脱式运算,能简便的要用简便方法计算.
4
5
-
11
15
+
3
10

1
4
+
1
3
+
1
4
+
2
3

1-
5
6
-
1
6
题型:解答题难度:中档来源:不详

答案


(1)class="stub"4
5
-class="stub"11
15
+class="stub"3
10

=class="stub"1
15
+class="stub"3
10

=class="stub"11
30


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

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


(3)1-class="stub"5
6
-class="stub"1
6

=1-(class="stub"5
6
+class="stub"1
6
),
=1-1,
=0.

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