用你喜欢的方法计算815÷7+17×71538+(78-14)÷12.-数学

题目简介

用你喜欢的方法计算815÷7+17×71538+(78-14)÷12.-数学

题目详情

用你喜欢的方法计算
8
15
÷7+
1
7
×
7
15

3
8
+(
7
8
-
1
4
)÷
1
2
题型:解答题难度:中档来源:不详

答案

(1)class="stub"8
15
÷7+class="stub"1
7
×class="stub"7
15

=class="stub"8
15
×class="stub"1
7
+class="stub"1
7
×class="stub"7
15

=(class="stub"8
15
+class="stub"7
15
)×class="stub"1
7

=1×class="stub"1
7

=class="stub"1
7


(2)class="stub"3
8
+(class="stub"7
8
-class="stub"1
4
)÷class="stub"1
2

=class="stub"3
8
+class="stub"5
8
×2,
=class="stub"3
8
+class="stub"10
8

=class="stub"13
8

更多内容推荐