问题
解答题
计算: (1)-13+10-7; (2)13+4÷(-
(3)-32-(-2)2×
(4)(
(5)4×(
|
答案
(1)原式=-3-7=-10;
(2)原式=13-4×
=10;3 4
(3)原式=-9-4×
=-9-1 8
=-91 2
;1 2
(4)原式=(-60)×
+(-60)×3 4
-(-60)×7 12 7 6
=-45-35+70
=-10;
(5)原式=4
-8+3=43
-5≈1.93.3