The smallest whole number that becomes 340 when rounded
to the nearest ten is 335. The largest is 344.
55
45 to 54
uuu
350 to 449
6000
It is 55.
55
599950
25000
5500 to 6499
5500 to 6499
45 to 54
85 and 94
uuu
8,500 and 9,499
350 to 449
5500 to 6499