问题
解答题
计算题 (1)(-20)+(-18)-(-14) (2)(+
(3)-36÷(
(4)-14-
(5)(-
(6)(-2)3÷16-(-0.125)×(-4)2 (7)-8-[-7+(1-
(8)|-
|
答案
(1)(-20)+(-18)-(-14)
=-38+14
=-24;
(2)(+
)-3 2
-5 12
+(-5 2
)7 12
=(
-3 2
)-(5 2
+5 12
)7 12
=-1-1
=-2;
(3)-36÷(
+1 2
-5 6
)7 12
=-36÷3 4
=-48;
(4)-14-
×[3-(-3)2]1 6
=-1-
×[3-9]1 6
=-1-
×[-6]1 6
=-1+1
=0;
(5)(-
-2 3
+5 6
)÷11 12 1 24
=(-
-2 3
+5 6
)×2411 12
=-
×24-2 3
×24+5 6
×2411 12
=-16-20+22
=-14;
(6)(-2)3÷16-(-0.125)×(-4)2
=-8÷16-(-0.125)×16
=-0.5+2
=1.5;
(7)-8-[-7+(1-
×0.6)÷(-3)]2 3
=-8-[-7+(1-0.4)÷(-3)]
=-8-[-7+0.6÷(-3)]
=-8-[-7-0.2]
=-8+7.2
=-0.8;
(8)|-
|÷(7 9
-2 3
)-1 5
×(-4)21 3
=
÷7 9
-7 15
×161 3
=
-5 3 16 3
=-3
.2 3