1550
1550
1550
1500
There are infinitely many possible answers. Let A be any number greater than or equal to sqrt(1547) = 39.3. Let B = 1547/A Then A*B = A*(1547)/A = 1547 So, for example, 154.7 * 10 or 1547 * 100 or 40 * 38.675
15.47 or 1547/100
2000
122 to the nearest 100 is 100
103 to the nearest hundreds is 100
100
100
4198 to the nearest 100 = 4200