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Q.3 Find:
(i) 1.3 × 10
(ii) 36.8 × 10
(iii) 153.7 × 10
(iv) 168.07 × 10
(v) 31.1 × 100
(vi) 156.1 × 100
(vii) 3.62 × 100
(viii) 43.07 × 100
(ix) 0.5 × 10
(x) 0.08 × 10
(xi) 0.9 × 100
(xii) 0.03 × 1000
Answer :

(i) 1.3 × 10 = 13/10 ×10 =13
(ii) 36.8 ×10 = 368/10×10= 368
(iii) 153.7 × 10 = 1537/10 ×10 = 1537
(iv) 168.07×10 = 16807/100 ×10= 16807/10 = 1680.7
(v) 31.1×100 = 311/10×100= 311×10 =3110
(vi) 156.1×100 = 1561/10×100= 1561×10 =15610
(vii) 3.62 × 100 = 362/100×100 = 362
(viii) 43.07×100 = 4307/100×100= 4307
(ix) 0.5×10 = 5/10×10= 5
(x) 0.08× 10 = 8/100 ×10= 8/10 = 0.8
(xi) 0.9 × 100 = 9/10×100= 9×10=90
(xii) 0.03 × 1000 =3/100×1000 =3/10= 0.3