计算21÷(13+25)÷9112.23×25+2.77÷2.578÷[13×(32-34)].-六年级数学

题目简介

计算21÷(13+25)÷9112.23×25+2.77÷2.578÷[13×(32-34)].-六年级数学

题目详情

计算
21÷(
1
3
+
2
5
)÷
9
11

2.23×
2
5
+2.77÷2.5 
7
8
÷[
1
3
×(
3
2
-
3
4
)].
题型:解答题难度:中档来源:不详

答案

(1)21÷(class="stub"1
3
+class="stub"2
5
)÷class="stub"9
11

=21÷class="stub"11
15
÷class="stub"9
11

=class="stub"315
11
÷class="stub"9
11

=35;

(2)2.23×class="stub"2
5
+2.77÷2.5,
=0.892+1.108,
=2;

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

=3class="stub"1
2

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