苏教版一上数学课件 33. 10加几和相应的减法.ppt
10加几和相应的减法,15,15,10,5,1.,10,7,17,10,7,17,10,7,17,10,7,17,2.,10 2=,12,2 10=,12,12 2=,10,12 10=,2,9 10=,19,10 9=,19,1910=,9,10,199=,106 =,16,1810 =,8,410 =,14,110 =,11,1310 =,3,111 =,10,107 =,3,1610 =,6,510 =,15,3.,4.,10,4,14,13,3,10,? 支,13 个,