6 = 100s or 6x102
3 = 10s or 3x101
8 = 1s or 8x100
The correct way to write 638 is six hundred thirty-eight.
600
The number 638 is nearest to the hundred 600. When rounding to the nearest hundred, you look at the tens digit (which is 3 in this case). Since 3 is less than 5, you round down to 600.
600
600
six hundred thirty eight million 638 000 000
The answer depends on the degree to which you are estimating. To the nearest thousand it is 1 thousand; to the nearest hundred, it is 600 and so on.
638 rounded to the nearest twenty-five 650.
79.75
What does 638 mean
638
638 + 577 = 1215