问题
解答题
计算题: (1)(+18)+(-12) (2)(-1.5)×
(3)(
(4)-22-(-3)3×(-1)4. |
答案
(1)(+18)+(-12)=18-12=6;
(2)原式=-
×3 2
×(-4 5
)×5 2
=3 4
;9 4
(3)原式=48×
-48×2 3
-48×1 4
=32-12-18=2;3 8
(4)原式=-4-(-27)×1=-4+27=23.
计算题: (1)(+18)+(-12) (2)(-1.5)×
(3)(
(4)-22-(-3)3×(-1)4. |
(1)(+18)+(-12)=18-12=6;
(2)原式=-
×3 2
×(-4 5
)×5 2
=3 4
;9 4
(3)原式=48×
-48×2 3
-48×1 4
=32-12-18=2;3 8
(4)原式=-4-(-27)×1=-4+27=23.