一、混合運(yùn)算·······································2
二、 觀察物體·······································13
三、 加與減············································17
四 、乘與除············································30
整理與復(fù)習(xí) ·······································40
五 、周長·················································45
六 、乘法·················································52
七 、年、月、日·······································67
數(shù)學(xué)好玩·················································74
八 、認(rèn)識小數(shù)············································80
總復(fù)習(xí)、······················································92

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