用递等式计算.1000-4920÷241.1×(20-19.3)+2.113÷[(12+13)×35].-数学

题目简介

用递等式计算.1000-4920÷241.1×(20-19.3)+2.113÷[(12+13)×35].-数学

题目详情

用递等式计算.
1000-4920÷241.1×(20-19.3)+2.1
1
3
÷[(
1
2
+
1
3
3
5
]
题型:解答题难度:中档来源:晋江市模拟

答案

(1)1000-4920÷24,
=1000-205,
=795;

(2)1.1×(20-19.3)+2.1,
=1.1×0.7+2.1,
=0.77+2.1,
=2.87;

(3)class="stub"1
3
÷[(class="stub"1
2
+class="stub"1
3
)×class="stub"3
5
]

=class="stub"1
3
÷[class="stub"5
6
×class="stub"3
5
],
=class="stub"1
3
÷class="stub"1
2

=class="stub"2
3

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