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跳绳,北师大版 一年级上册 第三单元 加与减(一),+ =,7,1,8,+ = 9,8,1,1,9 =,8,+ = 9,7,2,2,9 =,7,+ = 9,6,3,3,9 =,6,+ = 9,4,5,4,9 =,5,填一填,8,9,6,4,3,5,8,5,3,8,8,3,5,8,5,3,7,2,9,9,7,2,2,7,9,9,2,7,? 棵,4,5,9,5,2,7,? 朵,4,7,