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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,*,*,两位数减整十数、一位数,(不退位),计算小达人:,53+30=43+20=22+30=,53+3 =43+2=22+3=,83,52,45,56,63,25,45,30=,(),你是怎样算的?和同学说一说。,45,30=,(),15,个,45,30=,(),15,个,45,30=,(),15,45,30=,40,5,10,15,个,先算,40,30,=,10,,,再算,10,+,5,=,15,。,45,3=,40,5,42,先算什么,,再算什么?,计算,45,30,和,45,3,有什么不同?,55-30=,25,55-3=,52,86-40=,46,86-4=,82,1,.,先在计数器上拨一拨,再填出结果。,54,20=,34,54,2=,52,1,.,先在计数器上拨一拨,再算出结果。,86,50=,36,86,5=,81,2,.,60,30,8=,38,68,30=,38,9,6,70=,73,79,6=,73,3,.,一共摘了,65,箱苹果。,已经运走,40,箱。,=,65,40,25,(),箱,4,.,看谁先到达终点。,48,40=8,48,4=44,59,40=19,59,4=55,75,40=35,75,4=71,64,40=24,64,4=60,86,40=46,86,4=82,97,40=57,97,4=93,5,.,先说出得数是几十多,再计算。,79,50=,29,86,30=,56,37,3=,34,25,4=,21,95,70=,25,68,5=,63,49,7=,42,78,40=,38,五十多,二十多,二十多,三十多,六十多,二十多,三十多,四十多,6,.,不计算,在 里填上,“,”“,”,或,“,”,。,58,4,58,40,82,50,72,40,69,6,96,6,75,30,57,30,7,.,=,24,10,14,(),个,借走后还剩多少个?,8,.,校园里柳树和杨树一共有,35,棵。,杨树有多少棵?,=,35,20,55,(),棵,
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