6.28—(3.76+1.28)的简便计算

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6.28—(3.76+1.28)的简便计算6.28—(3.76+1.28)的简便计算6.28—(3.76+1.28)的简便计算6.28—(3.76+1.28)=6.28—(3.76+1.24+0.04

6.28—(3.76+1.28)的简便计算
6.28—(3.76+1.28)的简便计算

6.28—(3.76+1.28)的简便计算
6.28—(3.76+1.28)
=6.28—(3.76+1.24+0.04)
=6.28—(5+0.04)
=6.28—5—0.04
=1.28—0.04
=1.24

6.28-1.28-3.76=5-3.76=1.24

6.28-(3.76+1.28)
=6.28-1.28-4+0.24
=1+0.24
=1.24