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北师大版一年级数学下册美丽的田园 Four short words sum up what has lifted most successful Four short words sum up what has lifted most successful individuals above the crowd: a little bit more. individuals above the crowd: a little bit more. -author -author -date-date1156875115687511 5 6一共有几只大白鹅？一共有几只大白鹅？9 14 17 149=5(只) 8 1.1.还剩几只鸭子？还剩几只鸭子？2.2.鸭子比松鼠多几只？鸭子比松鼠多几只？12 3 9102103=72 + 7=9破十法12 3 = 921122=10101=9连减法12 3 = 9因为3 += 12做减法想加法9所以123 = 911 4 7101104=61 + 6=7破十法11 4 = 713111=10103=7连减法11 4 = 7因为4 += 11做减法想加法7所以114 = 7