脱式计算.(能简算的要简算)①14×75-624÷39②57÷9+47×19③23+(56-34)÷38④711÷[25-(1-710)].-数学

题目简介

脱式计算.(能简算的要简算)①14×75-624÷39②57÷9+47×19③23+(56-34)÷38④711÷[25-(1-710)].-数学

题目详情

脱式计算.(能简算的要简算)
①14×75-624÷39
5
7
÷9+
4
7
×
1
9

2
3
+(
5
6
-
3
4
)÷
3
8

7
11
÷[
2
5
-(1-
7
10
)].
题型:解答题难度:中档来源:不详

答案

①14×75-624÷39
=1050-16,
=1034;

class="stub"5
7
÷9+class="stub"4
7
×class="stub"1
9

=class="stub"5
7
×class="stub"1
9
+class="stub"4
7
×class="stub"1
9

=(class="stub"5
7
+class="stub"4
7
)×class="stub"1
9

=class="stub"9
7
×class="stub"1
9

=class="stub"1
7


class="stub"2
3
+(class="stub"5
6
-class="stub"3
4
)÷class="stub"3
8

=class="stub"2
3
+class="stub"1
12
×class="stub"8
3

=class="stub"2
3
+class="stub"2
9

=class="stub"8
9


class="stub"7
11
÷[class="stub"2
5
-(1-class="stub"7
10
)].
=class="stub"7
11
÷[class="stub"2
5
-class="stub"3
10
],
=class="stub"7
11
÷class="stub"1
10

=class="stub"70
11

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