120 can be expressed as a product of its prime factors as
(a) `5 xx 8 xx 3`
(b) `15 xx 2^3`
(c) `10 xx 2^2 xx 3`
(d) `5 xx 2^3 xx 3`

252 can be expressed as a product of primes as 2xx2xx3xx3xx7( b) 2xx2xx2xx3xx7 (c) 3xx3xx3xx3xx7 (d) 2xx3xx3xx3xx7

Multiply and express as a mixed fraction : (a) 3 xx 5 1/5 (b) 5 xx 6 3/4 (c) 7 xx 2 1/4 (d) 4 xx 6 1/3 (e) 3 1/4 xx 6 (f) 3 2/3 xx 8

In which of the following expressions, prime factorization has been done? (i) 24=2\ xx\ 3\ xx\ 4 (ii) 56=1\ xx\ 7\ xx\ 2\ xx\ 2\ xx\ 2 (iii) 70=2\ xx\ 5\ xx\ 7\ (iv) 54=2\ xx\ 3\ xx\ 9

(-5) xx (-2) xx (-10) xx (-8) xx (-3) = square

Find the product: (i) 3/4 xx 5/7 , (ii) 5/8 xx (-3/7) , (iii) (-2/5) xx 8

Write the exponential form of each expression. 2 xx 2 xx 2 xx 3 xx 3 xx 3 xx 3 xx 5 xx 5 xx 5.

Write the exponential form of each expression : 2 xx 2 xx 2 xx 3 xx 3 xx 3 xx 3 xx 5 xx 5 xx 5 .

Find the number from each of the following expanded forms : , (a) 8 xx 10^4 + 6 xx 10^3 + 0 xx 10^2 + 4 xx 10^1 + 5 xx 10^0 , (b) 4 xx 10^5 + 5 xx 10^3 + 3 xx 10^2 + 2 xx 10^0 , (c) 3 xx 10^4 + 7 xx 10^2 + 5 xx 10^0