Answer: The value of 3 in 350 is 10 times the value of 3 in 403 .
Explanation:
Given : Henry counted 350 lockers in his school.
Hayley counted 403 lockers in her school.
The value of 3 in 350 is 3 hundreds and 300 and the value of 430 is 3 tens and 30.
Since 300 is 10 times 30 because

Then, the value of 3 in 350 is 10 times the value of 3 in 403 .