ज्ञात कीजिए: (i) `2.7 xx 4 " (ii) " 1.8xx 1.2 " (iii) " 2.3 xx 4.35`

(i) 4.3 xx 0.13 =? (ii) 1.12 xx 2.3 xx 4.325 =?

Find the products : (i) (-2) xx 3 xx (-4) " " (ii) 2 xx (-5) xx (-6) " " (iii) (-8) xx 3 xx 5 (iv) 8 xx 7 xx (-10) " " (v) (-3) xx (-7) xx (-6)

Simplify : (i) 2 xx 10^3 (ii) 7^2 xx 2^2 (iii) 2^3 xx 5 (iv) 3 xx 4^4

Some pictures (a) to (f) are given below. Tell which of them show: (i) 2 xx 1/4 , (ii) 2 xx 3/7 , (iii) 2 xx 1/3 , (iv) 1/4 xx 4 , (v) 3 xx 2/9 , (vi) 1/4 xx 3

Find: (i) 0.2 xx 6 (ii) 8 xx 4.6 (iii) 2.71 xx 5 (iv) 20.1 xx 4 (v) 0.05 xx 7 (vi) 211.02 xx 4 (vii) 2 xx 0.86

Find: (i) 0.2 xx 6 (ii) 8 xx 4.6 (iii) 2.71 xx 5 (iv) 20.1 xx 4 (v) 0.05 xx 7 (vi) 211.02 xx 4 (vii) 2 xx 0.86

Multiply and reduce to lowest form : (i) 7 xx 3/5 (ii) 4 xx 1/3 (iii) 2 xx 6/7 (iv) 2/3 xx 4 (v) 5/2 xx 6 (vi) (11) 4/7 (vii) 20 xx 4/5 (viii) 13 xx 1/3 (ix) 15 xx 3/5

Multiply and reduce to lowest form : (i) 7 xx 3/5 (ii) 4 xx 1/3 (iii) 2 xx 6/7 (iv) 2/3 xx 4 (v) 5/2 xx 6 (vi) (11) 4/7 (vii) 20 xx 4/5 (viii) 13 xx 1/3 (ix) 15 xx 3/5

Which of the drawings (a) to (d) show : (i) 2 xx 1/5 (ii) 2 xx 1/2 (iii) 3 xx 2/3 (iv) 3 xx 1/4

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