805  Average
1

Name : _________________

 

refresh

Class A - 12 students with the score 50%.
Class B - 8 students with the score 40%.
What is the total average score?



Class A - 5 students with the score 60%.
Class B - 5 students with the score 40%.
What is the total average score?



Class A - 18 students with the score 90%.
Class B - 2 students with the score 80%.
What is the total average score?



Class A - 6 students with the score 60%.
Class B - 4 students with the score 40%.
What is the total average score?



Class A - 17 students with the score 90%.
Class B - 3 students with the score 50%.
What is the total average score?



Class A - 16 students with the score 60%.
Class B - 4 students with the score 50%.
What is the total average score?



Class A - 12 students with the score 70%.
Class B - 8 students with the score 90%.
What is the total average score?



Class A - 6 students with the score 60%.
Class B - 4 students with the score 60%.
What is the total average score?



Class A - 18 students with the score 80%.
Class B - 2 students with the score 70%.
What is the total average score?



Class A - 4 students with the score 40%.
Class B - 6 students with the score 50%.
What is the total average score?



+(         )

 

(         )+

++[[          ]]++

805    46 50 89 52 84 ( 321 )   58 78 60 79 46 ( 321 )   [[ 642 ]]