简便计算 4.4X5.5一44X0.33一0.44X22
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简便计算4.4X5.5一44X0.33一0.44X22简便计算4.4X5.5一44X0.33一0.44X22简便计算4.4X5.5一44X0.33一0.44X224.4X5.5一44X0.33一0.4
简便计算 4.4X5.5一44X0.33一0.44X22
简便计算 4.4X5.5一44X0.33一0.44X22
简便计算 4.4X5.5一44X0.33一0.44X22
4.4X5.5一44X0.33一0.44X22
=4.4*5.5-4.4*3.3-4.4*2.2
=4.4*（5.5-3.3-2.2）
=4.4*0
=0
原式=4.4*5.5-4.4*3.3-4.4*2.2
=4.4*（5.5-3.3-2.2）
=4.4*0
=0
简便计算4.4X5.5-44X0.33+0.44X22
简便计算 4.4X5.5一44X0.33一0.44X22
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