Question

Cubes of all even natural numbers are even.
12. (x)=x" where n is odd.
13. X-1
14. Zero is the smallest rational number.
15. Zero is additive identity of any rational no.
16. Zero is neither positive nor negative rational number.
II Very short answer type questions:
1. Which is greatest 1/2 or 2/3?
2. Evaluate 2/3+32
3. Write in scientific notation 0.123
4.
d square foot of 2x2x7x7x5x5
6. Find the square root of 10000.
7. Find cube root of 64.
8. Which number is divisible by 11, (-1353) or 1107
9. Evaluate (12 x + 3xy)/(3x)
10. Factorize bm + bn
11. Solve for x:(7x+3) = (2x +13)
12. If CP. = €500, S.P. =3650. Find profit or loss percent.
(12x 1=12)
III Short answer type questions:
(10x 1.5=15)
1. Find 9 rational numbers between 2/3 and 3/4
2. Evaluate (2-5/2-8) x 23
3. Find square root of 42.25 by long division method.
4. Find cube root of 4.913
5. Divide (10 x+15x+15) by (10 x+5)
6. Factorise 2 x +5xy+4x+10y
7. Solve for x |-* (2x-1)] +12 = 1/(x-1)
8. Solve for y: 1.32 y+0.02 y = 1.19+y
9. A pair of jeans has a marked price of 1500. During sale, a discount of 30% is given
on the marked price. Find selling price.
10. Find three consecutive even numbers whose sum is equal to 42.
IV Long answer type questions:
(10 x 2.5=25)
1. Find he oot of (-1331/2744)
2. What is the smallest aumber that should be multiplied to 1536 to get a perfect cube?
3. Ifx+1/x = 3, find the value of x2+1/62
4. Find the value of 54 x 56 by using suitable identity
5. Factorize completely 32 +92 +6
6. Factorize x-x-2
7. Present ages of Anu and Raj are in the ration 4:5. Eight years from now the ratio of
their ages will be 5:6. Find their present ages.​

Answer 1

Cubes of all even natural numbers are even.

12. (x)=x" where n is odd.

13. X-1

14. Zero is the smallest rational number.

15. Zero is additive identity of any rational no.

16. Zero is neither positive nor negative rational number.

II Very short answer type questions:

1. Which is greatest 1/2 or 2/3?

2. Evaluate 2/3+32

3. Write in scientific notation 0.123

4.

d square foot of 2x2x7x7x5x5

6. Find the square root of 10000.

7. Find cube root of 64.

8. Which number is divisible by 11, (-1353) or 1107

9. Evaluate (12 x + 3xy)/(3x)

10. Factorize bm + bn

11. Solve for x:(7x+3) = (2x +13)

12. If CP. = €500, S.P. =3650. Find profit or loss percent.

(12x 1=12)

III Short answer type questions:

(10x 1.5=15)

1. Find 9 rational numbers between 2/3 and 3/4

2. Evaluate (2-5/2-8) x 23

3. Find square root of 42.25 by long division method.

4. Find cube root of 4.913

5. Divide (10 x+15x+15) by (10 x+5)

6. Factorise 2 x +5xy+4x+10y

7. Solve for x |-* (2x-1)] +12 = 1/(x-1)

8. Solve for y: 1.32 y+0.02 y = 1.19+y

9. A pair of jeans has a marked price of 1500. During sale, a discount of 30% is given

on the marked price. Find selling price.

10. Find three consecutive even numbers whose sum is equal to 42.

IV Long answer type questions:

(10 x 2.5=25)

1. Find he oot of (-1331/2744)

2. What is the smallest aumber that should be multiplied to 1536 to get a perfect cube?

3. Ifx+1/x = 3, find the value of x2+1/62

4. Find the value of 54 x 56 by using suitable identity

5. Factorize completely 32 +92 +6

6. Factorize x-x-2

7. Present ages of Anu and Raj are in the ration 4:5. Eight years from now the ratio of

their ages will be 5:6. Find their present ages.