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1、口算2–1=4–1=3–2=4–2=3–1=11232313311填一填4443142242244减几（4-3=1）-=看图写算式-=431431快乐大转盘3–2=4–3=4–2=4–3=3–1=4–3=3–2=2–1=3–1=4–3=4–3=4–1=3–2=4–3=4–2=4–3=3–1=4–3=3–2=2–1=3–1=4–3=4–3=4–1=3–2=4–3=4–2=4–3=3–1=4–3=3–2=2–1=3–1=4–3=4–3=4–1=3–2=4–3=4–2=4–3=3–1=4–3=3–2=2–1=3–1=4–3=4–3=4–1=3–2=4–3=4–2=4–3=3–1
2、=4–3=3–2=2–1=3–1=4–3=4–3=4–1=3–2=4–3=4–2=4–3=3–1=4–3=3–2=2–1=3–1=4–3=4–3=4–1=3–2=4–3=4–2=4–3=3–1=4–3=3–2=2–1=3–1=4–3=4–3=4–1=3–2=4–3=4–2=4–3=3–1=4–3=3–2=2–1=3–1=4–3=4–3=4–1=3–2=4–3=4–2=4–3=3–1=4–3=3–2=2–1=3–1=4–3=4–3=4–1=青蛙跳这节课你有什么收获？
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