Good friends1919,2828, hand in hand, 3737 is really close, and 4646 will go together. Make a pair of hands in half.

Look at large numbers, divide them into decimals, make up ten, and add up the remainder. Remember large numbers in your mind and decimals in your hand.

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, and ten big tigers. Think of 1 when you see 9, 2 when you see 8, 3 when you see 7, and 4 when you see 6. When you see the big corner decimal system, switch the two numbers first.

Children should remember 9 to 1, 8 to 2, 7 to 3, 6 to 4 and 5 to 5.

The method of filling ten is simple and easy, and the thinking process includes "looking at a large number, dividing it by two, filling ten by three and adding four".

Look at large numbers, divide them into decimals, make up ten, and add up the remainder.

The ten-by-ten method is a process of decomposing the smaller addend of two addends into the sum of two numbers, so that the sum of one part and the other addend is 10.

Collect ten songs

Good friends1919,2828, hand in hand, 3737 is really close, and 4646 will go together. 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 and ten big tigers.