Question

What number has the same value as 50 tens?

Answer 1

50 tens is the same as saying 50 x 10 which is 500.
One ten is 10.  Therefore, to find 50 tens, you must times 50 by 10.  When multiplying a number greater than 0 by 10, you simply add a 0 to the end of the number.  Following this rule, 50 tens is 500. 

Answer 2

500
Reason:
50 tens is basically ten 50 times. 10 x 50 = 500