2, the unit length is determined: the opening hand is 1? Rice? Eight pistols 1? Decimeter nail cover 1? Cm, a millet 1? Millimeter. ?
3. The ballad of judging the number of days in a month: 135780 wax, 3 1 day is never bad; Thirty days in winter in 469, February 28th in normal year.
4. Number of songs read within 100 million: first 10000, then press 10 to read 10000, and then10000; Don't read 0 at the end of each level, read 0 in the middle. ?
5. How to write the number within 100 million: write 10,000 first, then one, and then another 10,000; There is no unit, and you need to use 0 to make up the position?
6. Judgment of addition within ten songs: 19 19 Good friends, 2828 holding hands, 3737 really close, 4646 walking together, 55 making a pair of hands.
Extended data:
Digital songs are folk songs written in numerical or seasonal order. In terms of connotation and significance, their imagination and interest are different from ordinary folk songs. Most of them are enlightenment books. Digital Song is a short poem for children, which emphasizes meter and rhyme. Many poems are gradually processed and sorted out according to idioms in ancient ceremonies.
Its characteristics are easy to understand and catchy. And from the simple to the deep, some parts are also suitable for school-age children to sing. Digital songs are very popular with children.
References:
Baidu Encyclopedia: Digital Songs