人教版一年級數(shù)學(xué)下冊《100以內(nèi)數(shù)的順序和比較大小》PPT課件_1

1、,數(shù)的順序和比較大小,100,98,97,96,95,94,93,92,90,89,87,86,85,84,83,81,80,79,78,76,75,74,72,71,70,69,68,67,65,63,62,61,60,59,58,57,56,54,53,52,51,50,49,48,47,45,43,42,41,40,39,38,36,35,34,32,31,30,29,27,26,25,24,23,21,20,18,16,14,12,10,9,8,7,6,5,4,3,1,13,2,11,22,33,44,55,66,77,88,99,15,17,19,28,37,46,64,73,82,

2、91,3,給 十 位 是 3 的 數(shù) 涂 上 綠 色,39,38,36,35,34,32,31,33,37,100,98,97,96,95,94,93,92,90,89,87,86,85,84,83,81,80,79,78,76,75,74,72,71,70,69,68,67,65,63,62,61,60,59,58,57,56,54,53,52,51,50,49,48,47,45,43,42,41,40,39,38,36,35,34,32,31,30,29,27,26,25,24,23,21,20,18,16,14,12,10,9,8,7,6,5,4,3,1,13,2,11,22,33,44

3、,55,66,77,88,99,15,17,19,28,37,46,64,73,82,91,3,39,38,36,35,34,32,31,33,37,100,98,97,96,95,94,93,92,90,89,87,86,85,84,83,81,80,79,78,76,75,74,72,71,70,69,68,67,65,63,62,61,60,59,58,57,56,54,53,52,51,50,49,48,47,45,43,42,41,40,39,38,36,35,34,32,31,30,29,27,26,25,24,23,21,20,18,16,14,12,10,9,8,7,6,5,4

4、,3,1,13,2,11,22,33,44,55,66,77,88,99,15,17,19,28,37,46,64,73,82,91,3,93,63,53,43,23,13,33,73,3,83,給 個 位 是 3 的 數(shù) 涂 上 黃 色,100,98,97,96,95,94,93,92,90,89,87,86,85,84,83,81,80,79,78,76,75,74,72,71,70,69,68,67,65,63,62,61,60,59,58,57,56,54,53,52,51,50,49,48,47,45,43,42,41,40,39,38,36,35,34,32,31,30,29,27

5、,26,25,24,23,21,20,18,16,14,12,10,9,8,7,6,5,4,3,1,13,2,11,22,33,44,55,66,77,88,99,15,17,19,28,37,46,64,73,82,91,給個位和十位相同的數(shù)涂上粉色,11,22,33,44,55,66,77,88,99,100,98,97,96,95,94,93,92,90,89,87,86,85,84,83,81,80,79,78,76,75,74,72,71,70,69,68,67,65,63,62,61,60,59,58,57,56,54,53,52,51,50,49,48,47,45,43,42,4

6、1,40,39,38,36,35,34,32,31,30,29,27,26,25,24,23,21,20,18,16,14,12,10,9,8,7,6,5,4,3,1,13,2,11,22,33,44,55,66,77,88,99,15,17,19,28,37,46,64,73,82,91,你能從表里發(fā)現(xiàn)哪些有趣的排列？,第4行第8個數(shù)是多少?,55前面一個數(shù)是多少？,按照數(shù)的順序填數(shù),(1),(2),0 10 ( ) ( ) ( ) 50 ( ) ( )( )( )( ),32,29,28,30,31,33,20,30,40,60,70,80,90,100,25,42,70,79,88,97

7、,53,64,魔力框,說出1100中個位上是5的所有的數(shù)。 說出1100中十位上是5的所有的數(shù)。,猜一猜,在1100中，個位上是0的數(shù)一共有多少個？在第幾列的位置上？ 個位上是1的數(shù)在第幾列？ 十位上是9的數(shù)有多少個？在第幾行的位置上？,填一填, 比69大1的數(shù)是( )，比69 少10的數(shù)是（ ） ，比69多30的數(shù)在第（ ）列的位置上。,比100小1的數(shù)是( )。, 40比( )大1， 比( )小1。,70,99,39,41,59,9,比一比,42,37,42里面有4個十。,37里面有3個十。,兩位數(shù)比大小,先比 十位，十位大的數(shù)大。,比一比,兩位數(shù)比大小,先比十位， 十位大的數(shù)大。,2 3,2 5,十位上的數(shù)一樣，再比個位， 個位上的數(shù)大的這個數(shù)大。,兩位數(shù)比大小，先比十位， 十位上的數(shù)大這個數(shù)就大。,3 9,4 5,兩位數(shù)比大小，先比十位， 十位上的數(shù)大這