I have a pair of hands, representing ninety-nine; Set the left hand to ten, and I can count to ninety;

Pose your right hand and count from one to nine; It's convenient to add and subtract, so don't worry about calculation.

Second, the hand index formula

The index finger extends "L" and the middle finger extends "2";

The ring finger is "3" and the little finger is "4";

Four fingers and a thumb, the thumb is "5" to remember;

Then extend the index finger to the little finger, and "6", "7", "8" and "9" are arranged in numbers.

Third, the right hand points out the exercise formula.

Take the lead, two tigers contend, in a few words, the four seas are at home, and the grain is abundant.

Six animals are thriving, and the eight immortals are crossing the sea, and nine Niu Yi hairs are urgent.

A word nine, two dragons playing with pearls, three pillars separated, surrounded by enemies, the grain is abundant.

Six gods without a master, seven ups and downs, exquisite, nine Niu Yi hairs, perfect.

(Note: When reading "urgent" or "perfect", make a fist in your right hand and put "1" in your left hand, indicating carry. )

Fourth, the left hand points out the exercise formula.

Ten, twenty, thirty, forty; Fifty,

Sixty, seventy, eighty, ninety, one hundred.

(Note: When reading "100", clap your hands, and then put your fist on your chest. )

Finger speed algorithm, palm calculation-reduce the complicated calculation process of pen calculation formula, save time and effort, and improve the calculation speed of students. Niu Hongwei, a teacher in Xi 'an, has been engaged in education for many years and applied the palm calculation method to the field of early childhood education. Thousands of children have been taught "palm arithmetic". It has a good effect in inspiring children's intelligence. Palm computing has effectively developed students' brains and stimulated their potential.