489  Average
1

Name : _________________

 

refresh

Class A - 7 students with the score 90%.
Class B - 3 students with the score 80%.
What is the total average score?



Class A - 3 students with the score 70%.
Class B - 7 students with the score 80%.
What is the total average score?



Class A - 6 students with the score 80%.
Class B - 4 students with the score 60%.
What is the total average score?



Class A - 13 students with the score 70%.
Class B - 7 students with the score 90%.
What is the total average score?



Class A - 5 students with the score 70%.
Class B - 5 students with the score 40%.
What is the total average score?



Class A - 3 students with the score 60%.
Class B - 7 students with the score 40%.
What is the total average score?



Class A - 7 students with the score 80%.
Class B - 3 students with the score 80%.
What is the total average score?



Class A - 14 students with the score 60%.
Class B - 6 students with the score 50%.
What is the total average score?



Class A - 6 students with the score 70%.
Class B - 4 students with the score 60%.
What is the total average score?



Class A - 8 students with the score 50%.
Class B - 2 students with the score 40%.
What is the total average score?



+(         )

 

(         )+

++[[          ]]++

489    87 77 72 77 55 ( 368 )   46 80 57 66 48 ( 297 )   [[ 665 ]]