,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,生产计划部,*,11/17/2024,生产计划部,20以内数的组成,10/8/2023生产计划部20以内数的组成,1,()个,十,和()个,一,合起来是()。,(),1,1,11,11,()个十和()个一()111111,()个,十,和()个,一,合起来是()。,6,1,16,16,(),(,6,)个,一,和(,1,)个,十,合起来是,16,。,()个十和()个一611616()(6,()个,十,和()个,一,合起来是()。,(),9,1,19,19,(,9,)个,一,和(,1,)个,十,合起来是(,19,)。,()个十和()个一()911919(9,()个,十,是()。,(),2,20,20,()个十是()。()22020,1,5,20,2,15,1520215,3,1,4,1,5,1,6,1,7,1,8,1,9,1,0,2,3141516171819102,十 个,1,4,十 个,1,7,十 个,1,8,十 个,2,0,1个十就在十位上拨1个珠,,,几个一就在个位上拨几个珠,。,1,个十就在十位上写,1,,,几,个一就在个位上写,几,。,十 个14十 个17十 个18十 个201个,4.(1)15里面有,(),个十和,(),个一。,(2)1个十和3个一合起来是,(,),。,(3)2个十是,(,),。,(4)8个一和1个十合起来是()。,(5)16里面有()个一和()个十。,(6)17里面有()个一。,17,6,1,18,20,13,5,1,4.(1)15里面有()个十和()个一。(4)8,12,14,15,17,18,20,121415171820,10,13,11,14,15,17,18,20,12,16,19,12,14,15,17,18,20,101311141517182012161912141517,10,13,11,14,15,17,18,20,12,16,19,12,14,15,17,18,20,101311141517182012161912141517,3,4,6,7,8,9,20,19,18,17,15,14,11,12,20,7,9,11,20,18,346789201918171514111220791120,再见,再见,