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加减法估算
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加减法估算. 邢 玉. 黑猫警长. 48. 41. 27. 73. 39. 2. 3. 粒. 粒. 白菜子. 南瓜子. 讨论: 它们的和会比50小吗? 它们的和会比70大吗?. 两种菜籽大约共丢了多少粒呢?. 白菜子. 南瓜子. 22. 37. 粒. 粒. 和松鼠妹妹的松子比,我比她大约 多丢了多少粒呢?. 白菜子. 南瓜子. 38颗. 59 粒. 我和松鼠妹妹大约共 丢了多少粒种子?. 白菜子. 南瓜子. 38颗. 59 粒. 80粒. 100粒. 手电28元.
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加减法估算
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