用简便方法计算16×23×(9×18)49×[34-(716-14)]612×35+3.5÷123.-数学

题目简介

用简便方法计算16×23×(9×18)49×[34-(716-14)]612×35+3.5÷123.-数学

题目详情

用简便方法计算
16×
2
3
×(9×
1
8
)
4
9
×[
3
4
-(
7
16
-
1
4
)]
6
1
2
×
3
5
+3.5
÷1
2
3
题型:解答题难度:中档来源:不详

答案

(1)16×class="stub"2
3
×(9×class="stub"1
8
),
=16×class="stub"2
3
×9×class="stub"1
8

=12;

(2)class="stub"4
9
×[class="stub"3
4
-(class="stub"7
16
-class="stub"1
4
)],
=class="stub"4
9
×[class="stub"3
4
+class="stub"1
4
-class="stub"7
16
],
=class="stub"4
9
×class="stub"9
16

=class="stub"1
4


(3)6class="stub"1
2
×class="stub"3
5
+3.5÷1class="stub"2
3

=6.5×class="stub"3
5
+3.5×class="stub"3
5

=(6.5+3.5)×class="stub"3
5

=6.

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