Simple calculation: a scientific counting method represents a larger number or a smaller number, such as 0.00000 1 or 10000000, so the calculation can be simple; Will use fractional calculation, there will be no division symbol, such as speed = distance/time, which is equivalent to the previous speed equal to distance divided by time; Flexible use of mathematical algorithms, such as density = mass/volume, then volume = mass/density; Proficient in other operations, such as sum of squares and square root formula.

Distinguish the difference between physical quantity symbols and unit symbols, the quality is represented by m, and the symbol is represented by kg, and apply the idea of mathematical algebra to it.

Unit conversion, you can flexibly convert each unit back and forth.