问题
解答题
计算: (1)18-(-7) (2)-8×(-6)÷
(3)(-48)×﹙-
(4)3+20÷22×(-
|
答案
(1)18-(-7)=25;
(2)-8×(-6)÷4 5
=48÷4 5
=60;
(3)(-48)×﹙-
+1 6
-3 4
﹚1 12
=48×
-48×1 6
+48×3 4 1 12
=8-36+4
=-24;
(4)3+20÷22×(-
)-121 5
=3+20÷4×(-
)-121 5
=3+5×(-
)-121 5
=3-1-12
=-10.