Grade 5 - Mathematics - Average

The average of 3 numbers is 17. Two of the numbers are 13 and 18. What is the third number?

(a)  

Joe had $12. Karim had $4 less than Joe. Raj had $5 more than Karim. What was the average amount of money they had?

(a)  

Jalil caught 4 fish with a total mass 3.5 kg. The average mass of 3 of them is 0.92 kg. What was the mass of the fourth fish?

(a)  

Lina reads an average of 16 pages of a book every day. How many pages will she read in 2 weeks?

(a)  

The average of 2 numbers is 15 670. If the difference between them is 11 212, what is the smaller number?

(a)  

The average height of 15 boys is 1.52 m. If one boy is 1 m 66 cm tall, what is the average height of the other 14 boys?

(a)  

The sum of 14 numbers is 104. If the sum of 2 of the number is 23, find the average of the remaining numbers.

Mathematical Equivalence

OFF

At an archery competition, 6 men scored an average of 54 points. The winner's score was 4 points more than that of the runner up. The average score of the rest was 47 points. How many points did the winner score?

(a)  

The average mass of 2 ducks and 3 duckling is 1.92 kg. The average mass of 3 ducks and 5 duckling is 1.85 kg. All ducks have the same mass, and all ducklings have the same mass. What is the total mass of 2 ducks and 1 duckling?

(a)