Encountered problem formula:
Meeting distance = speed and? Meeting time
Meeting time = meeting distance? Speed sum
Speed sum = meeting distance? Meeting time
Xiaoshengchu Mathematics: Sum, Difference, Multiplication and Average
What is the sum and difference problem? Given the sum of two numbers and their difference, the application problem of finding the number of these two numbers is called the sum-difference problem.
What is the problem of doubling? Given the sum of two numbers and the multiple relationship between them, the application problem of finding the number of two numbers is called the sum multiple problem.
What is the difference problem? Given the difference and multiple relation of two numbers, the application problem of finding the number of two numbers is called the difference multiple problem.
What's the average? The average value refers to the sum of all data in a set of data divided by the number of data.
Formula of sum and difference problem
(sum+difference)? 2= large quantity
(sum and difference)? 2= decimal
And folding problems.
And then what? (multiple-1)= decimal
Decimal? Multiple = large number
(or sum-decimal = large number)
Difference problem
Poor? (multiple+1)= large number
Decimal? Multiple = large number
(or decimal+difference = large number)
Average problem formula
Total amount? Total number of copies = average.