计算:(本题满分16分,每小题各4分) (1) (2) (3) (4)
计算: (1)(-)−1-+4cos30°− (2)
计算(每小题4分,共16分) (1) (2) (3) (4)
(本题12分)计算: (1) (2) (3) (4)
计算下列各题: (1)(-2)+(-8) (2)1+(-2)+|-2-3|-5 (3) (4) (5)﹣3﹣[﹣5+(1﹣2×)÷(﹣2)] (6)25×(-18)+(-25)×12+25×(-10 )