计算:(1)2814+(-1712)(2)0.75+(-114)+0.125+(-57)+(-418)-数学

题目简介

计算:(1)2814+(-1712)(2)0.75+(-114)+0.125+(-57)+(-418)-数学

题目详情

计算:
(1)28
1
4
+(-17
1
2
)

(2)0.75+(-
11
4
)+0.125+(-
5
7
)+(-4
1
8
)
题型:解答题难度:中档来源:不详

答案

(1)28class="stub"1
4
+(-17class="stub"1
2
)
=10class="stub"3
4

(2)0.75+(-class="stub"11
4
)+0.125+(-class="stub"5
7
)+(-4class="stub"1
8
)

=[0.75+(-class="stub"11
4
)]+[0.125+(-4class="stub"1
8
)]+(-class="stub"5
7

=-2-4-class="stub"5
7

=-6class="stub"5
7

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