Contrast number/standard number = score (percentage), standard number × score = contrast number, contrast number/score = standard number. A common formula for solving application problems by percentage, growth number ÷ standard number = growth rate, reduction number ÷ standard number = reduction rate. The difference between two numbers ÷ smaller number = more (hundred) points (increase), and the difference between two numbers ÷ larger number = less (hundred) points (decrease).
Calculation skills of percentage application problems
Answering skills of percentage application problems: percentage application problems are common types of percentage application problems, which refer to attendance, germination rate, qualified rate, oil yield, excellent rate and so on in some real life. This kind of problem must be clearly understood and analyzed, and some variant questions are also based on the original topic changes, such as attendance.
If the attendance rate and the total number of people are given in the title, you can get the attendance rate, which is divided by the total number of people and multiplied by 100%. If the title gives the attendance rate and attendance rate, you can get the total number of people, and if the title gives the total number of people and attendance rate, you can get the attendance rate and multiply it by the total number of people.