1, create a digital chart. Enter the number of digits of pi to remember. To remember the figure of 1 million, you have to make more tables. After printing, arrange the data into a uniform array and enclose it with a pencil.

2. Starting from the fourth place, the fourth place: (3.141) (5926) (5358) (9793) (2384) (6264) (3383) 2 A simple start. This is the best way to start. Like weightlifting and running, reciting pi begins in groups. I don't want to remember the number 100 in my head at once.

3, originally 4 digits, 4 digits memory. I only remember 10 group once. Don't worry. Then double it and remember five groups of eight numbers at a time. Although the numbers are the same, you can improve your memory by adding numbers. The data can be sorted by phone number.

Pi is the ratio of the circumference to the diameter of a circle, which is generally expressed by the Greek letter π and is a universal mathematical constant in mathematics and physics. π is also equal to the ratio of the area of a circle to the square of its radius. Accurate calculation of geometric shapes such as circle perimeter, circle area and sphere volume is the key value. In the analysis, π can be strictly defined as the smallest positive real number x satisfying sinx= 0.

Pi is expressed by the Greek letter π (pronounced pài), which is a constant (approximately equal to 3. 14 1592654), representing the ratio of circumference to diameter. It is an irrational number, that is, an infinite cycle decimal.

In daily life, pi is usually expressed as 3. 14, which is used for approximate calculation. The fractional part 3. 14 1592654 is enough for general calculation. Even if engineers or physicists want to make more accurate calculations, they only need to take the values to a few hundred decimal places at best.