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口算乐园. 8+2. 10 - 1. 9 - 3. 5+3. 8 - 5. 8 - 2. 10 - 7. 8 - 4. ( 条 ). =. ( 条 ). =. ( 只 ). =. ? 只. 5 只. ( 只 ). =. =. =. =. =. - PowerPoint PPT Presentation
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口算乐园
9 - 3 8 - 5
10 -78 - 4
8+210 -15+38 - 2
= (条
)
= (条
)
5只
?只
= (只)
= (只)
==
==