一年級數(shù)學(xué)上冊第三單元分與合

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單擊此處編輯母版標(biāo)題樣式,,單擊此處編輯母版文本樣式,,第二級,,第三級,,第四級,,第五級,,,,*,2-5,的分與合,1,2,3,4,,,3,1,4,,,2,2,4,,,1,3,4,可以分成,3,和,1,,3,和,1,可以合成,4,,4,可以分成,2,和,2,,2,和,2,可以合成,4,,2,1,1,1,1,2,2,1,2,3,1,2,3,4,5可以分成〔 〕和〔 〕,1,4,( ),和,( ),可以合成,5,,1,4,5,,,1,4,5,,,4,1,5,,,2,3,5,,,3,2,5可以分成〔 〕和〔 〕,( ),和,( ),可以合成,5,,2,3,2,3,2,3,5,2,3,5,3,2,5,2,3,5,3,2,5,4,1,5,2,1,1,3,1,2,3,2,1,2,可以,分,成,1,和,1,,1,和,1,可以,合,成,2,3,可以,分,成,1,和,2,,1,和,2,可以,合,成,3,總結(jié),4,1,3,4,3,1,4,2,2,5,1,4,5,4,1,5,2,3,5,3,2,4,可以,分,成,1,和,3,4,可以,分,成,2,和,2,5,可以,分,成,1,和,4,5,可以,分,成,2,和,3,,,,大數(shù),小數(shù),小數(shù),小結(jié),：,,大數(shù),分,，小數(shù),合,。,