二年级数学下册三《生活中的大数》有多少字作业北师大版.docx

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1、1有多少字基础达标比一比,填一填。大约有 100 粒 大约有()粒 大约有()粒估一估,填一填。大约()颗 大约()颗 大约 800 颗知识巩固猜一猜,估一估。1、大丰收,动物们去收白菜。小鹿可能收了多少棵白菜?(在正确答案下面画“”)224 棵 412 棵 185 棵我们收了 1034 棵。 我们收的比牛少得多,比猪多一些。我们收了 280 棵。22、猜一猜、标一标、比一比。第三台电视机的价钱少于 2000 元,但比第一台、第二台电视机都贵。第三台电视机的价格可能是多少?在横线上标出价格并比一比。能力提升1、一个四位数,百位上的数正好是千位上的数的 3 倍,而十位上的数又比百位上的数多2,个

2、位上的数是 0,这个四位数可能是多少?2、明明:我想的数比 500 大的多。淘气:我想的是 500。笑笑:我想的数比 500 多一些。明明想的数大约是多少?(在合适的数下面画)400 470 600 900笑笑想的数大约是多少?(在合适的数下面画)400 470 600 900答案与解析3基础达标1、比一比,填一填。大约有 100 粒 大约有(200)粒 大约有(300)粒2、估一估,填一填。大约(200)颗 大约(400)颗 大约 800 颗知识巩固1、猜一猜,估一估。大丰收,动物们去收白菜。小鹿可能收了多少棵白菜?(在正确答案下面画“”)2、猜一猜、标一标、比一比。略224 棵 412 棵 185 棵我们收了 1034 棵。 我们收的比牛少得多,比猪多一些。我们收了 280 棵。4能力提升1、一个四位数,百位上的数正好是千位上的数的 3 倍,而十位上的数又比百位上的数多2,个位上的数是 0,这个四位数可能是多少?可能是:1350、26802、明明:我想的数比 500 大的多。淘气:我想的是 500。笑笑:我想的数比 500 多一些。明明想的数大约是多少?(在合适的数下面画)400 470 600 900笑笑想的数大约是多少?(在合适的数下面画)400 470 600 900

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