题目
计算题
(1)
(2)
(3)
(4)
+(-2)2×(-14)
(5)
-22- ×[2-(-3)2]
(6)
—
答案: 解: 9−(−11)+(−21) =9+11-21=-1
解: (13−521−314)÷(−142) = (13−521−314)× (-42)=-14+10+9= 5
解: (−13) ×3÷3× (−13) =(-1) ÷3×(−13) = 19
解: (12−13)÷(−16) +(-2)2×(-14)= 16÷(−16) +4 × (-14)=-57.
解:-22- 17 ×[2-(-3)2] =-4- 17 × (-7)=-3.
解:— 91920×20 = −19920× 20=-199