美丽的田园,11,5,6,8,7,5,11 5 6,一共有几只大白鹅？,9,14,17,149=5(只),8,1.还剩几只鸭子？,2.鸭子比松鼠多几只？,4+7=,8+5=,6+4=,13-5=,9+2=,7+6=,4+9=,12-6=,12-9=,11-3=,10-6=,9+9=,11,13,10,8,11,13,13,6,3,8,4,18,12 3 9,10,2,103=7,2 + 7=9,破十法,12 3 = 9,2,1,122=10,101=9,连减法,12 3 = 9,因为3 += 12,做减法想加法,9,所以123 = 9,11 4 7,10,1,104=6,1 + 6=7,破十法,11 4 = 7,1,3,111=10,103=7,连减法,11 4 = 7,因为4 += 11,做减法想加法,7,所以114 = 7,
