Determine each of the sums given below using suitable rearrangement : `15409 +278+ 691+422`

Determine the sums given below using suitable rearrangement. (i) 953+707+647 (ii) 1983+647+217+353 (iii) 15409+278+691+422 (iv) 3259+10001+2641+9999 (V) 1+2+3+4+96+97+98+99 (vi) 2+3+4+5+45+46+47+48

Find the product using suitable rearrangement: 25xx348

Determine each of the following products by suitable rearrangements: 2\ x\ 1497\ x\ 50