Lesson Example Discussion Quiz: Class Homework |
Quiz In Class |
Title: Averages |
Grade: 8-a Lesson: S2-L3 |
Explanation: Hello students, as we have discussed a few problems on this topic. Now, its time for you to solve the problems on your own and fill the answers in the quiz sheet and get your queries addressed by the tutor in the class. |
Quiz: in Class
| Problem Id | Question | Description | Options |
|---|---|---|---|
1 |
Solve the problem. |
The average of 7 numbers is 9. What is the 8th number, so that the average becomes 12? |
A) 23 B) 44 C) 33 D) 55 |
2 |
Solve the problem. |
The average mark of ten papers is 70. The average mark of the first 5 papers is 72 and that of the last 5 papers is 65. Find the marks obtained in the tenth paper? |
A) 20 B) 15 C) 35 D) 5 |
3 |
Solve the problem. |
The average of a number and its reciprocal is 4. The average of its cube and its reciprocal is equal to. |
A) 211 B) 312 C) 225 D) 244 |
4 |
Solve the problem. |
The average of eight numbers is 55. If one number is removed, the average becomes 40. What is the number removed? |
A) 160 B) 150 C) 450 D) 565 |
5 |
Solve the problem. |
The average of 7 consecutive numbers is 20. The largest of these numbers is : |
A) 23 B) 51 C) 43 D) 31 |
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