计算:(1)(-3)+(-4)-(+11)-(-9);(2)-16×5-16×(-4)+16×(-8);(3)-6÷(-0.25)×1124÷2;(4)[-32×(-13)2-0.8]×412÷(-5

题目简介

计算:(1)(-3)+(-4)-(+11)-(-9);(2)-16×5-16×(-4)+16×(-8);(3)-6÷(-0.25)×1124÷2;(4)[-32×(-13)2-0.8]×412÷(-5

题目详情

计算:
(1)(-3)+(-4)-(+11)-(-9);
(2)-
1
6
×5-
1
6
×(-4)+
1
6
×(-8)

(3)-6÷(-0.25)×
11
24
÷2

(4)[-32×(-
1
3
)
2
-0.8]×4
1
2
÷(-5
1
4
)
题型:解答题难度:中档来源:不详

答案

(1)原式=(-3)+(-4)+(-11)+(+9),
=-18+9,
=-9;

(2)原式=-class="stub"5
6
-(-class="stub"4
6
)+(-class="stub"8
6
)

=-class="stub"5
6
+(+class="stub"4
6
)+(-class="stub"8
6
)

=-class="stub"3
2


(3)原式=-6×(-4)×class="stub"11
24
×class="stub"1
2

=24×class="stub"11
24
×class="stub"1
2

=class="stub"11
2


(4)原式=[-9×class="stub"1
9
-class="stub"4
5
]×class="stub"9
2
÷(-class="stub"21
4
)

=-class="stub"9
5
×class="stub"9
2
×(-class="stub"4
21
)

=class="stub"54
35

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