脱式计算.①713×34+34×613②37÷711+47÷711③25%×32×0.125④(37.5%+56-25%)×24.-数学

题目简介

脱式计算.①713×34+34×613②37÷711+47÷711③25%×32×0.125④(37.5%+56-25%)×24.-数学

题目详情

脱式计算.
7
13
×
3
4
+
3
4
×
6
13

3
7
÷
7
11
+
4
7
÷
7
11

③25%×32×0.125
④(37.5%+
5
6
-25%)×24.
题型:解答题难度:中档来源:不详

答案

class="stub"7
13
×class="stub"3
4
+class="stub"3
4
×class="stub"6
13

=(class="stub"7
13
+class="stub"6
13
)×class="stub"3
4

=1×class="stub"3
4

=class="stub"3
4


class="stub"3
7
÷class="stub"7
11
+class="stub"4
7
÷class="stub"7
11

=class="stub"3
7
×class="stub"11
7
+class="stub"4
7
×class="stub"11
7

=(class="stub"3
7
+class="stub"4
7
)×class="stub"11
7

=1×class="stub"11
7

=class="stub"11
7


③25%×32×0.125,
=0.25×4×8×0.125,
=(0.25×4)×(8×0.125),
=1×1,
=1;

④(37.5%+class="stub"5
6
-25%)×24,
=(class="stub"3
8
+class="stub"5
6
-class="stub"1
4
)×24,
=class="stub"3
8
×24+class="stub"5
6
×24-class="stub"1
4
×24,,
=9+10-6,
=19-6,
=13.

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