Mathematical Ballads

1. The judgment song of the decimal point: The decimal point is so smooth. Run to the left and the number shrinks. Cross to the right and the number expands. Expand or shrink ten (fold), hundred (fold), thousand (fold), and move the position one (), two (), three (). ?

2. Judgment of the unit of length: 1 meter with outstretched hands, 1 decimeter for a figure-eight pistol. A fingernail is 1?cm, and a grain of millet is 1?mm. ?

3. Rhymes for determining the number of days in the month: 135780, thirty-one days will never differ; 469, winter will have thirty days, and February 28 in ordinary years. ?

4. How to read numbers within 100 million: 10,000 level first, then 1 level, 10,000 level is read according to 1 level, followed by 10,000; 0 at the end of each level is not read, and 0 in the middle is read once . ?

5. How to write numbers within hundreds of millions: first write ten thousand, then one, and then add ten thousand; there is not a single unit, so you have to use 0 to fill in the place?

6. Songs about addition within ten: One nine, one and nine are good friends, two, eight, two and eight hold hands, three, seven, three and seven are really close, four, six, four and six go together, five and five make up one pair of hands.

Extended information:

Number songs are ballads written starting with numbers or seasonal sequences. In terms of connotation and meaning, their imagination and interest are different from ordinary ballads. Most of them are enlightenment readings. "Number Songs" are short poems written for children, emphasizing meter and rhyme. Many of the poems are gradually processed and compiled based on idioms in ancient rituals.

Its features are easy to understand and catchy. It progresses from shallow to deep, and some parts are suitable for school-age children to sing. "Number Song" is very popular with children.

Reference: Baidu Encyclopedia: Digital Song