计算:(1)-6-8-2+3.54-4.72+16.46-5.28;(2)(-323)-(-234)-(-123)-1.75.-数学

题目简介

计算:(1)-6-8-2+3.54-4.72+16.46-5.28;(2)(-323)-(-234)-(-123)-1.75.-数学

题目详情

计算:
(1)-6-8-2+3.54-4.72+16.46-5.28;
(2)(-3
2
3
)-(-2
3
4
)-(-1
2
3
)-1.75.
题型:解答题难度:中档来源:不详

答案

(1)-6-8-2+3.54-4.72+16.46-5.28
=(-6-8-2-4.72-5.28)+(3.54+16.46)
=-26+20
=-6;
(2)(-3class="stub"2
3
)-(-2class="stub"3
4
)-(-1class="stub"2
3
)-1.75
=(-3class="stub"2
3
)+2class="stub"3
4
+1class="stub"2
3
-1class="stub"3
4

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

=-2+1
=-1.

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