脱式计算:5025-2940÷28×7;3.68×[1÷(2.1-2.09)];5-5×25+35;511×[(25+13)÷56].-数学

题目简介

脱式计算:5025-2940÷28×7;3.68×[1÷(2.1-2.09)];5-5×25+35;511×[(25+13)÷56].-数学

题目详情

脱式计算:
5025-2940÷28×7;
3.68×[1÷(2.1-2.09)];
5-5×
2
5
+
3
5

5
11
×[(
2
5
+
1
3
)÷
5
6
].
题型:解答题难度:中档来源:不详

答案

5025-2940÷28×7,
=5025-105×7,
=5025-735,
=4290;

3.68×[1÷(2.1-2.09)],
=3.68×[1÷0.01],
=3.68×100,
=368;

5-5×class="stub"2
5
+class="stub"3
5

=5-2+class="stub"3
5

=3class="stub"3
5



class="stub"5
11
×[(class="stub"2
5
+class="stub"1
3
)÷class="stub"5
6
],
=class="stub"5
11
×[(class="stub"6
15
+class="stub"5
15
)×class="stub"6
5
],
=class="stub"5
11
×[class="stub"11
15
×
class="stub"6
5
],
=class="stub"5
11
×class="stub"22
25

=class="stub"2
5

更多内容推荐