计算题:(1)2-5+4-(-7)+(-6)(2)(-113)÷0.8×(-67)(3)(214-412-118)×(-89)(4)-22×(-12)+8÷(-2)2(5)-12+|-8|÷(3-5)-(-2)3.-数学
题文
计算题: (1)2-5+4-(-7)+(-6) (2)(-1
(3)(2
(4)-22×(-
(5)-12+|-8|÷(3-5)-(-2)3. |
答案
(1)原式=2-5+4+7-6 =-3+4+7-6 =1+7-6 =2; (2)原式=(-
=(-
=(-
=
(3)原式=(
=
=-2+4+1 =3; (4)原式=-4×(-
|