课题课题:: 66 和和 77 的加减法的加减法 55 ++ 11 == 66看图写算式看图写算式 55++11== 66看图写算式看图写算式 1 + 5 = 61 + 5 = 65 + 1 = 65 + 1 = 6由以上可得 7711--== 66看图写算式 7766--== 11看图写算式 7711--== 6677 -- 66 == 11由以上即有 4 + 2 = 4 + 2 = 6644662 + = 2 + = 6 6 - - 2 = 2 = 4444226 6 - - = = 5 + 2 = 5 + 2 = 775577 2 + = 2 + = 5555227 7 - - = = 7 7 - - 2 = 2 = 6633336 6 -- == 3 + =3 + = 33 看图填空5 个?个( ) ( ) = ( )5+ 27?个6 个( ) ( ) = ( )6—42 447- 3= 2+4= 3+4=7- 3= 2+4= 3+4=1+6= 4+3= 7- 4=1+6= 4+3= 7- 4=6- 5= 6- 1= 4+2=6- 5= 6- 1= 4+2=6677777733115566