问题
解答题
计算:
(1)(-3)×(-9)+8×(-5);
(2)-22+(-2)3×5-(-8)÷(-2)2.
答案
(1)原式=27-40=-13;
(2)原式=-4-8×5+8÷4
=-4-40+2
=-42
计算:
(1)(-3)×(-9)+8×(-5);
(2)-22+(-2)3×5-(-8)÷(-2)2.
(1)原式=27-40=-13;
(2)原式=-4-8×5+8÷4
=-4-40+2
=-42