计算:(1) (2)(-5)×(-8)-(-28)÷4(3) (4)-2-(-2)-2×(-1)(5)+|-4|×0.5+2×(-1)
×(-)÷3÷1
(-9)﹣[-(-3)×(-2)]
6×÷×(-6)
-3-4+19-11+2
⑴(-0.9)+(+4. 4)+(-8.1)+(+5.6)