计算:①1035+(-356)+(-835)+(-216)②(145-256+3710-4815)÷(-130).-数学

题目简介

计算:①1035+(-356)+(-835)+(-216)②(145-256+3710-4815)÷(-130).-数学

题目详情

计算:①10
3
5
+(-3
5
6
)+(-8
3
5
)+(-2
1
6
)

     ②(1
4
5
-2
5
6
+3
7
10
-4
8
15
)÷(-
1
30
)
题型:解答题难度:中档来源:不详

答案

①10class="stub"3
5
+(-3class="stub"5
6
)+(-8class="stub"3
5
)+(-2class="stub"1
6
),
=10class="stub"3
5
-8class="stub"3
5
-3class="stub"5
6
-2class="stub"1
6

=2-6,
=-4;

②(1class="stub"4
5
-2class="stub"5
6
+3class="stub"7
10
-4class="stub"8
15
)÷(-class="stub"1
30
),
=(class="stub"9
5
-class="stub"17
6
+class="stub"37
10
-class="stub"68
15
)×(-30),
=class="stub"9
5
×(-30)-class="stub"17
6
×(-30)+class="stub"37
10
×(-30)-class="stub"68
15
×(-30),
=-54+85-111+136,
=221-165,
=56.

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