2 is divided into: 1 and 1.
The three points are: 1, 2, 2, 1.
4 is divided into 1, 3, 2, 2, 3 and 1.
5 is divided into 1, 4, 2, 3, 3, 2, 4, 1.
6 is divided into 1, 5, 2, 4, 3, 3, 4, 2, 5, 1.
7 is divided into 1, 6, 2, 5, 3, 4, 4, 3, 5, 2, 6, 1.
8 is divided into: 1, 7, 2, 6, 3, 5, 4, 5, 3, 6, 2, 7, 1
9 is divided into 1, 8, 2, 7, 3, 6, 4, 5, 5, 4, 6, 3, 7, 2, 8 and 1.
10 is divided into: 1, 9, 2, 8, 3, 7, 4, 6, 5, 6, 4, 7, 3, 8, 2, 9 and 1.
Extended data:
Gather ten children's songs
19 19 years of good friends,
Hand in hand,
3737 is so close,
Let's go together, four, four, six, six.
Make a pair of hands in half.
One plus nine, ten tadpoles,
Two plus eight, ten old ducks,
Three plus seven, ten old hens,
Four plus six, ten golden monkeys,
Five plus five, ten big tigers.
Children should keep in mind that the methods of "9-to-0/","8-to-2", "7-to-3", "6-to-4" and "5-to-5" are simple and easy, and the thinking process includes "looking at large numbers (looking at large numbers), dividing decimals (looking at decimals), doing ten and adding even numbers".