问题
解答题
计算下列各题: (1)(-4
(2)18-8÷(-2)+4×(-5) (3)-12×2+(-2)3÷4-(-3) (4)(1
|
答案
(1)原式=(-4.5+4.5)+5.5
=5.5;
(2)原式=18+4-20
=2;
(3)原式=-1×2-8÷4+3
=-2-2+3
=-1;
(4)原式=(
-7 4
-5 6
)×(-36)17 12
=-63+30+51
=18.
计算下列各题: (1)(-4
(2)18-8÷(-2)+4×(-5) (3)-12×2+(-2)3÷4-(-3) (4)(1
|
(1)原式=(-4.5+4.5)+5.5
=5.5;
(2)原式=18+4-20
=2;
(3)原式=-1×2-8÷4+3
=-2-2+3
=-1;
(4)原式=(
-7 4
-5 6
)×(-36)17 12
=-63+30+51
=18.