1,连加连减 及加减混合,2,口算：,2+4=,6,6+2=,7-4=,6-3=,3-3=,7-2=,6+3=,3-0=,5-4=,3+3=,3,0,3,5,9,3,6,1,8,3,5,+,1,=,6,6,+,1,=,7,4,5,+,1,+,1,=,7,5,7,-,1,=,6,6,-,2,=,4,6,7,-,1,-,2,=,4,7,1,3,2,又飞来了1只。,飞来了3只，,平台上有2只鸟，,5,2,+,3,+,1,=,6,8,4,3,3,10,9,4,2,1,7,10,又飞走了1只。,飞走了2只，,平台上有6只鸟，,4,6,-,2,-,1,=,3,11,9,4,2,3,12,8,3,1,4,13,4,+,3,=,7,7,-,2,=,5,4,+,3,-,2,=,5,14,4,-,2,=,2,2,+,3,=,5,4,+,2,-,3,=,5,15,7,2,3,3,16,5,3,2,6,17,5+2+3=,10,7-2-3=,2,4+1+5=,10,8-3-4=,1,18,看谁做得快！,10-4+2=2+6+1=8- 3- 5=,4+2+1= 7- 2+ 4= 6- 3- 1=,9- 2- 1=3+2-4=6+3- 3=,8 9 0,7 9 2,6 1 6,19,看看、说说、算算：,20,看看、说说、算算：,21,2+2+ =6,2+3=7,93=3,84=0,调皮小虎藏起了几？,22,5+2- =3,2+-6=1,93 + =8,86 + =5,调皮小虎藏起了几？,23,看图，你能写出几个算式?,1,2,4,24,思考：你能写出几个算式?,25,谢谢使用!,