Multiplying Squares Using Associative Property

Q.

What is the volume of the rectangular box of length = 8xy, breadth = 3xy and height = xy?

1. 24x²y²

2. 24x³y³

3. 24xy

4. 24x³y

Q.

Shade:

(i) $\frac{1}{2}$ of the circles in box (a) (ii) $\frac{2}{3}$ of the triangles in box (b)

(iii) $\frac{3}{5}$ of the squares in box (c)

(a)	(b)	(c)

Q.

Dividing $x(3x^2-27)$ by $3(x-3)$ gives $x^2+3x$.

1. x+3

2. x²+3x

Q. What is the sum of 5th and 6th triangular number?

Q.

Which of the following is not a factor of $5x^{2}y$?

1. $3x^2$

2. $x^2$

3. $xy$

4. $5x^2$y

Q.

The value of the expression $(2x{)}^2+5x$ for $x=3$ is $51$.

1. True

2. False

Q. Pick the triangular number which is also a perfect square.

1. 25
2. 16
3. 28
4. 36

Q.

The value of expression $(18{)}^2\times (5{)}^2$ is

1. 81

2. 810

3. 8100

4. 81000

Q.

What is the value of the expression ${13}^2\times 5^2$

1. 4200

2. 4252

3. 4225

4. 4255

Q.

What is the value of the expression ${12.5}^2\times 8^2$?

1. $10,000$

2. $10,500$

3. $10,050$

4. $10,550$

Q.

The value of expressions $(3.5{)}^2\times (0.2{)}^2$ is equal to

1. 49

2. 4.9

3. 0.49

4. 0.049

Q.

What is the value of expression $(1.25{)}^2\times (8{)}^2$?

1. 10

2. 100

3. 50

4. 500

Q.

If $a+b=9$, and $a-b=5$, find the value of $2(a^2+b^2)$.

1. $106$

2. $94$

3. $45$

4. $100$

Q.

The value of expression $(1.6{)}^2\times (0.5{)}^2$ is

1. 6.4

2. 0.64

3. 0.064

4. 64

Q.

Statement 1: Square numbers can never end with 2, 3, 7 or 8.

Statement 2: If a number ends with 0, 1, 4, 5, 6 or 9, it must be a square number.

Which of these statement(s) is/are right?

1. 1 is false & 2 is true.

2. 1 is true & 2 is false.

3. Both are false.

4. Both are true.