计算(1)-12×4-(-6)×5;(2)4-(-2)3-32÷(-1)3;(3)-24+3×(-1)4-(-2)3;(4)(-12+23-14)×(-24);(5)(-478)-(-512)+(-4

题目简介

计算(1)-12×4-(-6)×5;(2)4-(-2)3-32÷(-1)3;(3)-24+3×(-1)4-(-2)3;(4)(-12+23-14)×(-24);(5)(-478)-(-512)+(-4

题目详情

计算
(1)-12×4-(-6)×5;
(2)4-(-2)3-32÷(-1)3
(3)-24+3×(-1)4-(-2)3
(4)(-
1
2
+
2
3
-
1
4
)×(-24)

(5)(-4
7
8
)-(-5
1
2
)+(-4
1
4
)-(+3
1
8
);
(6)
3
2
×[3÷(-
2
3
)
2
-14]

(7)-14-
1
6
×[2-(-3)2]

(8)0.25×(-2)3-[4÷(-
2
3
)
2
+1]+(-1)2007
题型:解答题难度:中档来源:不详

答案

(1)原式=-48-(-30)
=-48+30
=-18;

(2)原式=4-(-8)-9÷(-1)
=4+8+9
=21;

(3)原式=-16+3×1-(-8)
=-16+3+8
=-5;

(4)原式=-class="stub"1
2
×(-24)+class="stub"2
3
×(-24)-class="stub"1
4
×(-24)
=12-16+6
=2;

(5)原式=-4class="stub"7
8
-3class="stub"1
8
+5class="stub"1
2
-4class="stub"1
4

=-8+1class="stub"1
4

=-6class="stub"3
4


(6)原式=class="stub"3
2
×[3×class="stub"9
4
-1]
=class="stub"3
2
×class="stub"23
4

=class="stub"69
8

(7)原式=-1-class="stub"1
6
×[2-9]
=-1-class="stub"1
6
×[-7]
=-1+class="stub"7
6

=class="stub"1
6


(8)原式=0.25×(-8)-[4×class="stub"9
4
+1]-1
=-2-[9+1]-1
=-2-10-1
=-13.

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