合理灵活的计算.(23+14-512)÷1365.5×36+55×6.4[78-(14+12)]÷15(35-13)÷23×78.-数学

题目简介

合理灵活的计算.(23+14-512)÷1365.5×36+55×6.4[78-(14+12)]÷15(35-13)÷23×78.-数学

题目详情

合理灵活的计算.
2
3
+
1
4
-
5
12
)÷
1
36
5.5×36+55×6.4[
7
8
-(
1
4
+
1
2
)]÷
1
5
3
5
-
1
3
)÷
2
3
×
7
8
题型:解答题难度:中档来源:不详

答案

(1)(class="stub"2
3
+class="stub"1
4
-class="stub"5
12
)÷class="stub"1
36

=(class="stub"2
3
+class="stub"1
4
-class="stub"5
12
)×36
=class="stub"2
3
×36+class="stub"1
4
×36-class="stub"5
12
×36,
=24+9-15,
=18;

(2)5.5×36+55×6.4,
=5.5×36+5.5×64,
=(36+64)×5.5,
=100×5.5,
=550;

(3)[class="stub"7
8
-(class="stub"1
4
+class="stub"1
2
)]÷class="stub"1
5

=[class="stub"7
8
-class="stub"6
8
class="stub"1
5

=class="stub"1
8
×5,
=class="stub"5
8


(4)(class="stub"3
5
-class="stub"1
3
)÷class="stub"2
3
×class="stub"7
8

=class="stub"4
15
×class="stub"3
2
×class="stub"7
8

=class="stub"7
20

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