问题
解答题
计算: (1)3×(-4)+28÷(-7); (2)-14+
(3)(-10)+8×(-3)2-(-4)×(-3). |
答案
(1)原式=-12-4=-16;
(2)原式=-1+
×[9-9]=-1;1 2
(5)原式=-10+8×9-12=-10+72-12=50.
计算: (1)3×(-4)+28÷(-7); (2)-14+
(3)(-10)+8×(-3)2-(-4)×(-3). |
(1)原式=-12-4=-16;
(2)原式=-1+
×[9-9]=-1;1 2
(5)原式=-10+8×9-12=-10+72-12=50.