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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,*,1120,各数的认识,1,1120各数的认识1,2,2,先数出十根小棒，捆成一捆。,10,个一,1,个十,3,先数出十根小棒，捆成一捆。10个一1个十3,1,个十和,2,个一合起来是,12,。,1 2,写作：,读作：十二,4,1个十和2个一合起来是12。1 2 写作：读作：十二4,1,个十和,5,个一合起来是,15,。,1 5,写作：,读作：十五,5,1个十和5个一合起来是15。1 5 写作：读作：十五5,6,6,7,7,返回,8,返回8,10,个一,1,个十,是,9,10个一 1个十是9,11,10,1110,12,11,1211,12,12,1212,13,13,1313,14,14,1414,12,15,1215,15,16,1516,16 ?,17,16 ?17,16,18,1618,17 ?,19,17 ?19,18,20,1820,21,21,22,22,2,个十,20,是,23,2个十20是23,24,24,0,25,025,0,26,026,0,1,27,0127,0,1,2,28,01228,0,1,2,3,29,012329,0,1,2,3,4,30,0123430,0,1,2,3,4,5,31,01234531,0,1,2,3,4,5,6,32,012345632,0,1,2,3,4,5,6,7,33,0123456733,0,1,2,3,4,5,6,7,8,34,01234567834,0,1,2,3,4,5,6,7,8,9,35,012345678935,0,1,2,3,4,5,6,7,8,9,10,36,01234567891036,0,1,2,3,4,5,6,7,8,9,10,11,37,0123456789101137,0,1,2,3,4,5,6,7,8,9,10,11,12,38,012345678910111238,0,1,2,3,4,5,6,7,8,9,10,11,12,13,39,01234567891011121339,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,40,0123456789101112131440,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,41,0123456789101112131441,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,42,012345678910111213141542,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,43,01234567891011121314151643,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,44,0123456789101112131415161744,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,45,012345678910111213141516171845,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,46,012345678910111213141516171819,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,47,012345678910111213141516171819,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,48,012345678910111213141516171819,14,49,1449,17,50,1750,从,7,数到,17,51,从7数到1751,从,11,数到,20,52,从11数到2052,53,53,54,54,17,55,1755,56,56,15,和,17,57,15和1757,一个一个数,58,一个一个数58,两个两个数,59,两个两个数59,五个五个数,60,五个五个数60,1,个十,61,1个十61,1,个十,6,个一,？,16,62,1个十6个一？1662,2,个十,20,63,2个十2063,抢答题,:,（,1,）,15,是由,( ),个十和,( ),个一组成,（,2,）,( ),个十和,( ),个一组成,17,（,3,）,16,前面一个数是,( ),后面一个数是,( ),（,4,）与,19,相邻的两个数是,( ),和,( ),1,1,15,18,5,7,17,20,64,抢答题:（1）15是由( )个十和( )个一组成（,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,（,3,）,15,是由,( ),个十和,( ),个一组成。,我会答,:,（,4,）,( ),个一和,( ),个十和起来,13,。,（,2,）,16,前面一个数是,( ),后面一个数是,( ),。,（,6,）与,19,相邻的两个数是,( ),和,( ),。,（,5,）,16,和,18,中间的一个数是（ ）。,（,1,）比,10,多,1,的是（ ），比,17,少,1,的是（ ）。,11,16,15,17,1,5,1,3,17,18,20,65,123456789101112131415161718192,19,11,18,12,13,17,14,16,20,15,66,1911181213171416201566,11,12,13,14,15,16,17,18,19,20,11,12,13,14,15,16,17,18,19,20,67,111213141516171819201112131415,20,19,18,17,16,15,14,13,12,11,68,2019181716151413121168,再见,69,再见69,
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