怎样简便就怎样算.375+450×259.07-22.78÷3.41.25×14×0.8(14×3.2+0.8)×595.65×53+720÷35.-数学

题目简介

怎样简便就怎样算.375+450×259.07-22.78÷3.41.25×14×0.8(14×3.2+0.8)×595.65×53+720÷35.-数学

题目详情

怎样简便就怎样算.
375+450×25
9.07-22.78÷3.4
1.25×14×0.8
(
1
4
×3.2+0.8)×
5
9

5.65×
5
3
+
7
20
÷
3
5
题型:解答题难度:中档来源:不详

答案

(1)375+450×25,
=375+11250,
=11625;

(2)9.07-22.78÷3.4,
=9.07-6.7,
=2.37;

(3)1.25×14×0.8,
=1.25×0.8×14,
=1×14,
=14;

(4)(class="stub"1
4
×3.2+0.8)×class="stub"5
9

=(0.8+0.8)×class="stub"5
9

=class="stub"8
5
×class="stub"5
9

=class="stub"8
9


(5)5.65×class="stub"5
3
+class="stub"7
20
÷class="stub"3
5

=5.65×class="stub"5
3
+class="stub"7
20
×class="stub"5
3

=(5class="stub"13
20
+class="stub"7
20
)×class="stub"5
3

=6×class="stub"5
3

=10.

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