Answer:
The digit with the greatest value is 1
Its value is hundred millions
Step-by-step explanation:
When dealing with whole numbers, the digit with the highest value is the leftmost digit and the value decreases as we move to the right
The attached image shows the place value chart that can be used for any number
The giving number is 123,456,789
As mentioned, the digit with the highest place value is the leftmost digit, so here it is the 1
Using the place value chart, we can see that the 1 has the value of 100,000,000 which is a hundred million
Hope this helps :)