There are not more tens. The cardinality ("count") of the set of tens is exactly the same as the cardinality of the set of hundreds.
The mapping f(x) = 10x where x is a multiple of 10 is bijective. Consequently, its domain and range are of the same "size".
The words "count" and "size" are in quotation marks because the relevant values are infinite.
687
5284
709
617
224 has.
849 has 8 hundreds, 4 fewer tens than hundreds, and 5 more ones than tens.
571
what number has 3 hundreds, 4 more tens than hundreds, and 1 more one than hundreds
what number has 9 hundreds, 2 fewer tens than hundreds, and 2 fewer ones than hundreds
687
5284
135
709
617
It is 689.
The number is 729.
The number has 1 thousand. It has 8 more hundreds than thousands so it has 8 more hundreds than 1. That is, it has 9 hundreds. It has 1 fewer tens than hundreds so it has 1 fewer tens than 9. That is, it has 8 tens.It has 2 fewer ones than tens so it has 2 fewer ones than 8. That is, it has 6 ones. So the number is 1986.