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Build confidence and fluency with fun, targeted math practice using the scientifically proven technique of spaced repetition. Each set is designed to reinforce key skills through engaging, easy-to-use activities that fit into your daily routine.

Free

心乘法

最大 5×5 点

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网格最大可达 10×10

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素数因子圆

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11 和 12 表

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Free

心算加减法（一）

加点

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加法十帧

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加法条

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减十帧

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减法路径

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减法条

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Free

心灵分裂

缺失因素 I

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缺失因素 II

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缺失因素 III

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分区数字栏

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引数条

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区域模型

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