问题
解答题
计算: (1)1-
(2)-5
(3)-24×(-
(4)18×(-
(5)-1
(6)-14÷(-52)×(-
|
答案
(1)1-
+4 7
-1 5
+3 7 9 5
=1-
-4 7
+3 7
+9 5 1 5
=1-1+2
=2;
(2)-5
-[-1.5-(4.5-43 4
)]3 4
=-5
-(-1.5-4.5+43 4
)3 4
=-5
+1.5+4.5-43 4 3 4
=-10.5+6
=-4.5;
(3)-24×(-
+1 2
-3 4
)1 3
=-
×(-24)+1 2
×(-24)-3 4
×(-24)1 3
=12-18+8
=20-18
=2;
(4)18×(-
)+13×2 3
-4×2 3 2 3
=
×(-18+13-4)2 3
=
×(-9)2 3
=-6;
(5)-1
×(1 2
-1)÷|-1 3
|1 13
=-
×(-3 2
)×132 3
=13;
(6)-14÷(-52)×(-
)+|0.8-1|5 3
=-1×(-
)×(-1 25
)+0.25 3
=-
+1 15 1 5
=
.2 15