Problem 2 - Entrance Test

We need to regroup. 702 − 389: ones column 2 < 9, so borrow 1 ten (0 tens becomes 9 tens and 2 becomes 12 ones). 12 − 9 = 3. Tens column 9 − 8 = 1. Hundreds column 6 − 3 = 3. Answer = 313.