问题
解答题
计算: (1)-
(2)-2.25-
(3)(-35)÷5 (4)(-25)×(-4) |
答案
(1)原式=-
+1 7 2 7
=
;1 7
(2)原式=-2
-1 4 1 4
=-2
;1 2
(3)原式=-7;
(4)原式=100.
计算: (1)-
(2)-2.25-
(3)(-35)÷5 (4)(-25)×(-4) |
(1)原式=-
+1 7 2 7
=
;1 7
(2)原式=-2
-1 4 1 4
=-2
;1 2
(3)原式=-7;
(4)原式=100.