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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
2、=,50+40 =,60+20 =,80,70,80,90,80,抢答,8030 =,70 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,