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1、整十数加、减整十数,快来填一填,6个十减3个十是()个十,3个十加4个十是()个十,3,7,2+3=,5,4+3=,1+9=,5+4=,6+2=,7,10,9,8,20+30=,40+30=,10+90=,50+40=,60+20=,50,70,100,90,80,抢答,6 3=,3,7 2=,9 4=,4 2=,5 4=,5,5,2,1,60 30=,70 20=,90 40=,40 20=,50 40=,30,50,50,20,10,30+5=35,30+50=80,50+30=,40+30=,10+70=,50+40=,60+20=,80,70,80,90,80,抢答,8030=,70
2、20=,80 40=,6020=,50 30=,50,50,40,40,20,40 20 60,猜一猜,30 50 80,猜一猜,90 40 50,60 30 30,60元,20元,?元,帮我算一算,你想买哪些商品?需要多少钱?,10+30(),20+()25,25+()=25-(),10+30,40+30,50-20,70-30,20+30,30+10,70-20,50-10,60-0,40-10,40+0,30-0,100-50,100-60,80-60,20+20,90-30,太谢谢了!,10,20,30,粉花和白花一共多少盆?,白花和黄花一共多少盆?,黄花和粉花一共多少盆?,10+20,=30,20+30,=50,30+10,=40,40 10,=30,