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#### Algebra - One Mark Questions

8th Standard EM

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Maths

Time : 00:30:00 Hrs
Total Marks : 10
5 x 1 = 5
1. The product of 7p3 and (2p2)2 is

(a)

14p12

(b)

28B7

(c)

9p7

(d)

11p12

2. The missing terms in the product -3m3n X9(_)m4n3 are

(a)

mn2,27

(b)

m2n,27

(c)

m2n2,-27

(d)

mn2,-27

3. If the area of a square is 36x4y2then, its side is______

(a)

6x4y2

(b)

8x2y2

(c)

6x2y2

(d)

-6x2y

4. If the area of a rectangle is 48m2n3 and whose length is 82mn then, its breadth is______

(a)

6mm

(b)

8m2n

(c)

7m2n2

(d)

6m2n2

5. If the area of a rectangular land is(a2-b2)− sq.units whose breadth is()ab− then, its length is__________

(a)

a-b

(b)

a+b

(c)

a2-b

(d)

(a+b)2

6. 5 x 1 = 5
7. Expand the following
(m + n) (____) = m2-n2

()

(m + n) (m - n) = m2-n2

8. Expand the following
(m + -)2= m2+ 14m + 49

()

(m + 7)2 = m2+14m+49

9. Expand the following
(k2-36)=(k+_)(k-__)

()

k2-36=k2-62142=(k+6)(k-6)

10. Expand the following
m2 - 6m + 9=_______

()

m2 - 6m + 9 = (m-3)2

11. Expand the following
(m -10)(m + 5)=______

()

(m - 10)(m + 5) =  m2+ (-10+ 5)m + (-10)(5) = m2 - 5m -50