上Р课Р啦Р考考你Р7–1 = 6–2 = 6–3 =?4–1 = 5–2 = 4–2 =?5–4 = 7–2 = 6–5 =?7–4 = 3–2 = 6–4 =Р6Р4Р3Р3Р3Р2Р1Р5Р1Р3Р1Р2Р8减几Р培智二班Р8Р8Р( )Р( )Р2Р6Р6Р2Р8 – 2 =Р8 – 6 =Р6Р2Р例题一:Р例题二:Р8Р8Р8 – 3 =Р3Р5Р( )Р( )Р5Р3Р8 – 5 =Р5Р3Р8Р8Р1Р7Р( )Р( )Р7Р1Р8 – 1 =Р8 – 7 =Р7Р1Р练一练:1、Р练一练:? 2、完成课堂练习题Р同学们,让我们跟随着快乐的节拍,Р谢谢!
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