The correct answer is 403.
To find the difference between 509 and 106, you need to subtract each place value separately.
Let's break it down:
Subtract the ones place:
9−6=3
Subtract the tens place:
0−0=0
Subtract the hundreds place:
5−1=4
So, the correct steps are:
Subtract 9 - 6 to get 3 ones,
Subtract 0 - 0 to get 0 tens,
Subtract 5 - 1 to get 4 hundreds.
The correct answer is 403.