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# Algebra CBSE Class 6

## Full fledge assessment Videos

Video Based Test funda (Please watch the above videos before attempting this assessment)
Question 1/20

Q 1. Which of the following is not an algebraic expression?

Solution

12x = 0 is an algebraic equation.

Q 2. Which of the following is not an algebraic expression?

Solution

5 = x - 2 is an algebraic equation.

Q 3. Atul has thrice the number of marbles owned by Ravi. If Atul has 6m + 12 marbles, then which of the following is true?

Solution

Atul has 6m + 12 marbles = 3 × number of marbles owned by Ravi.

6m + 12 = 3 × number of marbles owned by Ravi

Number of marbles owned by Ravi = (6m + 12) ÷ 3 = 2m + 4

Q 4. Which of the following is an algebraic equation?

Solution

An algebraic equation has LHS and RHS joined by a '=' sign.

Q 5. The constant in the expression 6y + 3 is

Solution

3 is the constant in the expression 6y + 3.

Q 6. The cost of 10 blue marbles and 6 white marbles is Rs. 50. If the cost of 1 blue marble is ‘b’, then the cost of a white marble is

Solution

The cost of 10 blue marbles and 6 white marbles is Rs. 50.

10 b + 6 white marbles = 50

White marbles = (50 - 10 b) ÷ 6

Q 7. The variable in the expression 2t + 3 is

Solution

t is the variable in the expression 2t + 3.

Q 8. Cost of a pen is Rs. 10 more than that of a pencil. If c is the price of the pen, then the price of the pencil is

Solution

Cost of a pen is Rs. 10 more than that of a pencil.

Cost of the pen - 10 = Cost of the pencil

c - 10 = Cost of the pencil

Q 9. What is the solution of 4x + 2 = 18?

Solution

4x + 2 = 18

4x + 2 − 2 = 18 − 2

4x = 16

At x = 4, we get LHS = 16.

Q 10. Amey’s age is twice the age of his sister. If his sister’s age is 3x, then Amey’s age is

Solution

Amey’s age is twice the age of his sister.

Amey’s age = 2 × 3x = 6x

Q 11. What is the solution of x + 5 = 23?

Solution

x + 5 = 23

x + 5 − 5 = 23 − 5

x = 18

Q 12. Cost of a kiwi is Rs. x. If June bought a kiwi and an avocado for Rs. 100, then the cost of an avocado is

Solution

Cost of kiwi + cost of avocado = 100

Cost of avocado + x = 100

Cost of avocado = 100 − x

Q 13. If x is the perimeter of a square, then its side is

Solution

If x is the perimeter of a square, then its side is x/4, as the perimeter of a square is 4 times each side.

Q 14. Which of the following is an algebraic expression?

Solution

10x + 32.01 is an algebraic expression.

Q 15. Form an algebraic equation for the number of bricks required to make a wall (w) if 15 bricks (b) are used.

Solution

1 wall = 15 bricks

1w = 15b

Q 16. If the weight of Jay is x kg and the weight of Ajay is (x + 10) kg, then which of the following is true?

Solution

The weight of Jay is x kg, and the weight of Ajay is (x + 10) kg.

Ajay is fatter than Jay.

Q 17. The solution of x + 15 = 10 is

Solution

x + 15 = 10

x + 15 − 15 = 10 − 15

x = −5

Q 18. Which of the following is not true?

Solution

a / b    b / a

Q 19. If ‘c’ is the cost of 1 ball and ‘d’ is the cost of 1 bat, then the cost of 10 balls and 7 bats is given by

Solution

If ‘c’ is the cost of 1 ball and ‘d’ is the cost of 1 bat, then the cost of 10 balls and 7 bats is given by 10 c + 7 d.

Q 20. The solution of x - 3 = 7 is

Solution

x − 3 = 7

x −3 + 3 = 7 + 3

x = 10

Still have doubt?

## Algebra Notes

#### Revision Notes

Read CBSE Class 6 Mathematics revision notes for Algebra

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## Algebra Doubts and Solutions

Asked by varalu.ramakrishna 6th April 2020, 1:11 PM
Asked by messi.rayan.kumar 5th April 2020, 3:34 PM
Asked by rajkumar9450104183 16th March 2020, 8:40 AM