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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,综合练习,算一算,70+,1,2,4,6,9,33,45,67,89,91,3,40,7,90,5,71,72,74,76,79,30,5,60,1,84,数一数,1,个,1,个数,从,46,数到,35,2,个,2,个数,从,78,数到,100,5,个,5,个数,从,40,数到,80,10,个,10,个数,从,100,数到,0,填一填,35=,(),+,(),78=,(),+,(),61=,(),+,(),99=,(),+,(),70=,(),-,(),20=,(),-,(),40=,(),-,(),80=,(),-,(),找一找,个位上是,3,的数,十位上是,6,的数,比,40,小的数,32,64,13,96,86,66,53,23,60,53,13,23,3,66,64,60,32,13,23,3,圈一圈,5,个十和,3,个一是:,503 53 35,9,个一和,8,个十是:,98 908 89,比,41,多一些的数:,45 76 39,比,23,多得多的数:,25 98 30,和,75,最接近的数:,80 73 76,想一想,16,26,27,25,35,48,46,47,37,56,55,66,77,68,59,排一排,27,56,18,91,50,100,选一选,我写了,42,个字,我写的字比你多的多,83,53,17,
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