资源描述
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,整十数、整百数的加减法,沪教版二年级第二学期,整十数、整百数的加减法沪教版二年级第二学期,1,70,里面有（）个十。,7,我会想,600,里面有（）个百。,6,260,里面有（）个十。,26,1200,里面有（）个百。,12,14,个十是（）。,140,14,个百是（）。,1400,70里面有（）个十。7我会想600里面有（,2,20+30=40+20=,60,10=70,30=,50,50,60,40,我会算,20+30=40+20=,3,0,100,200,300,400,500,600,700,800,900,1000,小青蛙的起点在,(),向,(),跳了,(),格，,终点在,(,),。,300,+,200,300,500,右,200+300=,500,500,010020030040050060070080090010,4,500+100=,600,算一算,300+600=,900,200+500=,700,400+200=,600,500+100=600算一算300+600=900200,5,0,100,200,300,400,500,600,700,800,900,1000,400,-,900,400,500,小青蛙的起点在,(),向,(),跳了,(),格，终点在,(),。,左,900,400=,500,500,010020030040050060070080090010,6,700,100=,600,算一算,600,200=,400,800,500=,300,500,400=,100,700100=600算一算600200=400800,7,探究一,800 200 =,600,8,个百,2,个百,=,6,个百,8,个百减,2,个百是,6,个百。,探究一 800 200 =600 8个百 2个百,8,900,600=,300,700,500=,200,200+700=,900,300+400=,700,900600=300700500=200200+70,9,探究二,120 40 =,80,12,个十,4,个十,=,8,个十,12,个十减,4,个十是,8,个十。,探究二 120 40 =80 12个十 4个十,10,900-10=,890,400,840,200,130,190,探究二,440-40=,80+50=,800+40=,270-70=,130+60=,900-10=890400840200130,11,探究三,420+190=,610,42,个十加,19,个十是,61,个十。,42+19=61,420+190=610,580,240=,340,580,240=340,58,个十减,24,个十是,34,个十。,58,24=34,探究三 420+190=61042个十加19个十是61个,12,340+210=,550,练一练,380,290=,90,170+250=,420,340+210=550练一练380290=90170+,13,一起来闯关,一起来闯关,14,第一关,500+20=,（）,（,1,）,700,（,2,）,720,（,3,）,520,（,4,）,52,（,3,）,第一关500+20=（）（1）700,15,第一关,530,260=,（）,（,1,）,790,（,2,）,270,（,3,）,720,（,4,）,27,（,2,）,第一关530260=（）（1）790,16,第二关,480,580,780,+50,260,460,760,+70,310,510,710,-60,530,730,930,-90,530,630,830,330,530,830,250,450,650,440,640,840,第二关480580780+50260460760+70310,17,480+50,530,红绿灯,第三关,480+50530红绿灯第三关,18,730,90,红绿灯,660,640,73090红绿灯660640,19,红绿灯,710,660,50,红绿灯71066050,20,930,240,红绿灯,590,690,930240红绿灯590690,21,这节课你有什么收获？,这节课你有什么收获？,22,小丁丁的爸爸有,1000,元超市购物券，他想买,件,小家电，把这些购物券用完，可以怎么买？,吹风机,330,元,饮水机,670,元,电饭煲,740,元,请你当参谋,电水壶,70,元,电话机,260,元,微波炉,410,元,2,小丁丁的爸爸有1000元超市购物券，他想买 件吹风机,23,吹风机,电话机,饮水机,电饭煲,电水壶,微波炉,330,元,260,元,670,元,740,元,70,元,410,元,小丁丁的爸爸有,1000,元超市购物券，他想买,3,件,小家电，把这些购物券用完，可以怎么买？,（,1,）在横线上填入编号,可以买,_,和,_,。,（,2,）列式计算,吹风机电话机饮水机电饭煲电水壶微波炉330元26,24,吹风机,电话机,饮水机,电饭煲,电水壶,微波炉,330,元,260,元,670,元,740,元,70,元,410,元,小丁丁的爸爸有,1000,元超市购物券，他想买,3,件,小家电，把这些购物券用完，可以怎么买？,（,1,）在横线上填入编号,可以买,_,，,_,和,_,。,（,2,）列式计算,吹风机电话机饮水机电饭煲电水壶微波炉330元26,25,
展开阅读全文