练 习 一,北师大版一年级数学上册,教学目标,1通过练习，使同学们进一步体会减法的含义，并能够正确计算。2培养同学们善于思考、观察问题、解决问题的能力。,1,3,4,3,1,4,3,2,5,2,3,5,51=,3+0=,3+2=,4+1=,20=,41=,43=,52=,54=,2+3=,33=,2+2=,4,3,5,5,2,3,1,3,1,5,0,4,( ),( ),( ),( ),1,3,5,7,每次多 个。,2,( ),( ),( ),( ),每次少 个。,10,8,6,4,2, 填数。,2,3,5,9,8,6,6,1,4,10,7,2,4,8,10,5,1,2,4,3 + 1,42,54,3 + 2,找家。,52,1+4,31,55,2,0,3,5,5 = 3,2=4,2+ =5,3=1+,2 = 0,5 = 0,5,3=4,1,2,2,3,2,2,5,4,1,1,5,4,猜一猜每个盒子里可能有哪些卡片。,谢谢！,
