How to write the second question on page 35 of exercises and tests in the second volume of the fifth grade of primary school mathematics (Jiangsu Education Edition)? Is there a formula? Thank you for your answers! ! !
The sum of these five numbers is five times the median number, the first number is the median number-1 1, the second number is the median number -9, the third number is the median number +9, and the fourth number is the median number+1 1.
The sum of five numbers is 130, so these five numbers are respectively
130÷5=26
26- 1 1= 15
26-9= 17
26+9=35
26+ 1 1=37
The sum of five numbers is 245, so these five numbers are respectively
245÷5=49
49- 1 1=38
49-9=40
49+9=58
49+ 1 1=60