25000 to 34999
The least number that rounds to 675,000,000 is 674,500,000, while the greatest number that rounds to the same value is 675,499,999. This is because any number from 674,500,000 up to 675,499,999 will round to 675,000,000 when rounded to the nearest million.
Anything from 2450 to 2549 -- 100 numbers
404,999
first round off the two numbers you are dividing to the nearest one. For example 9.5/1.5, round it off to 10/2 which will equal to 5.
5499. To round to the nearest thousand, the hundreds digit would be the decider: if 5 or more it would round up, 4 or less would round down. Need to round down, so the hundreds digit must be 4. The tens and units make no difference, so have them as large are possible, namely 9 each, to give: 5499 as the largest whole number that rounds to 5000 to the nearest 1000. A quick way is to observe 1000/2 = 500, so need to add 1 less than this (499) to the number and it will round down, that is 5000 + 1000/2 - 1 = 5000 + 500 - 1 = 5499.
the least number that round to 800000 is 750000 and the greatest number that round to 800000 is 849999.
450000
36249 and 36150
2.1 and 1.9
30 and 40
845 and 854
104 to 95
The least whole number is 1590000 and the greatest number is 1999999
36.5 and 37.4
500
54250 to 54349
750000 and 849999