细心算一算,马到成功! (1)-5+|8|-(+6)+(-2) (2)3×(-4)+(-28)÷7 (3)(-
(4)4×(-3)2-15÷(-3)-50 (5)|-
(6)-32×(-2)+(-4)2-(-2)÷
|
(1)-5+|8|-(+6)+(-2)
=-5+8-6-2
=-5;
(2)3×(-4)+(-28)÷7
=-12-4
=-16;
(3)(-
)÷3 5
×3(-11 3
)1 9
=(-
)×3×3×(-3 5
)10 9
=6;
(4)4×(-3)2-15÷(-3)-50
=4×9+5-50
=36+5-50
=-9;
(5)|-
|÷(7 9
-2 3
)-1 5
×(-4)21 3
=
×7 9
-15 7
×161 3
=
-5 3 16 3
=-
;11 3
(6)-32×(-2)+(-4)2-(-2)÷1 2
=-9×(-2)+16-(-2)×2
=18+16+4
=38.