计算: ( π ﹣ 1 ) 0 + 4 sin 45 ° - 8 + | ﹣ 3 | .
-2 +(-2) -(-1)
-10÷5×6
-2+5
计算: (1). (2)5.6+(-0.9)+4.4+(-8.1) (3) (4). (5) (6)
(本题6分)+()-1-sin45°+|-2013|