Chapter 11 – Algebra

An …………………. is a condition on a variable.

What do literals usually represent?

Which of the following is an equation?

Give expression for 25 added to r.

Pick out the solution from the values given in the bracket next to each equation. p – 5 = 5 (0, 10, 5 – 5)

A basket has x mangoes, how many mangoes are there in 5 baskets?

The expression for the statement: “5 times the sum of x and y” is

5 ÷ x has the operation

Perimeter of the square, whose each side is ‘n’ cm is

x + 5 = -11. Then x = ?

Which of the following is the perimeter of a regular hexagon of side ‘s’ units?

Form equation: Half of a number is 12.

Form equation: A number when added to 7 gives 10 as answer.

x- 12 = -20. Then x = ?

What is the method of finding a solution by trying out various values for the variable called?

Form equation: Twice a number added to 12 gives 27.

2m – 3 has the operation

Which of the following does 2n – 1 represent?

Form equation: Product of variable x and itself is 64.

The expression for the statement: “5 more than a number” is

Identify the operation 2m + 5.

Perimeter of an equilateral triangle, whose each side is ‘x’ unit is

x – 1 = -7. Then x = ?

Perimeter of an __________ = 3 × length of a side

y – 7 = -6. Then y = ?

Number of matchsticks required to make a pattern of “U”

Form equation: One fifth of x added to x get 25.

The expression for the statement: “The product of x and y added to 7” is

Ramu’s father is thrice as old as Ramu. If father’s age is 45 years, how old is Ramu?

Pick out the solution from the values given in the bracket next to each equation. x + 4 = 2 (– 2, 0, 2, 4)

x + 7 = 12. Then x = ?

The expression for the statement: “5 less than x is 6” is

Take Meena’s present age to be y years, what will be her age 5 years from now?

Number of matchsticks required to make a pattern of “A”

7 p has the operation

The expression for the statement: “Five times x added to y” is

The side of an equilateral triangle is shown by l. Express the perimeter of the equilateral triangle using l.

Which out of the following are expressions with numbers only?

Choose a value of ‘a’ that satisfies the equation 6a = -30.

The expression for the statement: “7 less than y” is

The expression for the statement: “y multiplied by 10 and then 7 added to product” is

Find the length of a side of an equilateral triangular garden whose perimeter is 66 m.

The _______ of the variable in an equation which satisfies the equation is called a solution to the equation.

A number is multiplied by 6 and 12 is added to the product. The result is 84. What is the number?