计算下列各题.(1)[-2-3-8-1×(-1)-2]×(-12)-2×90(2)2-1-(-23)-2+(32)0.-数学

题目简介

计算下列各题.(1)[-2-3-8-1×(-1)-2]×(-12)-2×90(2)2-1-(-23)-2+(32)0.-数学

题目详情

计算下列各题.
(1)[-2-3-8-1×(-1)-2(-
1
2
)-2
×90
(2)2 -1-(-
2
3
)-2+(
3
2
)0
题型:解答题难度:中档来源:不详

答案

(1)[-2-3-8-1×(-1)-2]×(-class="stub"1
2
)-2×90
=(-class="stub"1
8
-class="stub"1
8
×1)×4×1
=-class="stub"1
4
×4
=-1;

(2)2-1-(-class="stub"2
3
)-2+(class="stub"3
2
)0
=class="stub"1
2
-class="stub"9
4
+1
=class="stub"3
2
-class="stub"9
4

=-class="stub"3
4

更多内容推荐