问题
解答题
计算: (1)-20+(-14)-(-18)-13 (2)2
(3)-5+6÷(-2)×
(4)-32÷
|
答案
(1)-20+(-14)-(-18)-13
=-20-14+18-13
=-47+18
=-29;
(2)2
x1 2
÷(-19+9)1 4
=
×5 2
÷(-10)1 4
=
÷(-10)5 8
=-
;1 16
(3)-5+6÷(-2)x1 3
=-5-3×1 3
=-5-1
=-6;
(4)-32÷
×(-4 9
)2+(-2)32 3
=-9÷
×4 9
-84 9
=-9-8
=-17.