问题
解答题
计算: (1)(-2)2×5-(-2)3÷4; (2)6+(-
|
答案
(1)(-2)2×5-(-2)3÷4
=4×5+8÷4
=20+2
=22;
(2)6+(-
)-2-(-1.5)1 5
=6-
-2+1.51 5
=7.5-2.2
=5.3.
计算: (1)(-2)2×5-(-2)3÷4; (2)6+(-
|
(1)(-2)2×5-(-2)3÷4
=4×5+8÷4
=20+2
=22;
(2)6+(-
)-2-(-1.5)1 5
=6-
-2+1.51 5
=7.5-2.2
=5.3.