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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,*,两位数减一位数和整十数,口 算,5-2= 9-3=,7-6= 80-40=,30+3= 70-30= 60-20= 50+8=,20+5= 40+7= 8-4= 6-5=,3,6,4,40,33,40,40,58,25,47,4,1,“,好孩子” 玩具店,小明,小红,我有,35,元,买一个小象玩具,还剩多少元?,35 - 2 =,35,-,2,=,33,先算:,5 2 =,3,再算:,30 +,3,=,33,小明,小红,我有,35,元,买一个小象玩具,还剩多少元?,我有,20,元,,如果买,35,元,的布娃娃,,还差多少元?,35 - 20 =,35,-,20 =,15,先算:,30 20 =,10,再算:,10,+ 5 =,15,做一做:,76-4= 57-3= 68-5=,76-40= 57-30= 68-50=,72,54,63,27,18,36,口算,:,57-3= 99-6= 89-7=,65-4= 48-5= 36-2=,30-10= 50-20= 76-40=,38-10= 57-20= 95-70=,54,61,93,43,82,34,20,28,30,37,36,25,
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