用合适的方法计算下列各题.617×12×511÷(14÷15)58×17+38×1747×712÷4936×(3-29)-数学

题目简介

用合适的方法计算下列各题.617×12×511÷(14÷15)58×17+38×1747×712÷4936×(3-29)-数学

题目详情

用合适的方法计算下列各题.
6
17
×
1
2
×51
1÷(
1
4
÷
1
5
5
8
×17+
3
8
×17
4
7
×
7
12
÷
4
9
36×(3-
2
9
题型:解答题难度:中档来源:不详

答案

(1)class="stub"6
17
×class="stub"1
2
×51,
=class="stub"6
17
×51×class="stub"1
2

=18×class="stub"1
2

=9;

(2)1÷(class="stub"1
4
÷class="stub"1
5
),
=1÷class="stub"5
4

=class="stub"4
5


(3)class="stub"5
8
×17+class="stub"3
8
×17,
=(class="stub"5
8
+class="stub"3
8
)×17,
=1×17,
=17;

(4)class="stub"4
7
×class="stub"7
12
÷class="stub"4
9

=class="stub"1
3
×class="stub"9
4

=class="stub"3
4


(5)36×(3-class="stub"2
9
),
=36×3-36×class="stub"2
9

=108-8,
=100.

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