Subtract 2 digit numbers with exchange July 8, 2019 16 32 64 128 Subtract 2 3 digit numbers with exchange Subtract 2 digit numbers no exchange Subtract 2 4 digit numbers with one exchange Subtract 2 4 digit numbers no exchange Subtract 2 4 digit numbers 1 exchange Subtract 2 3 digit numbers no exchange Subtract 2 4 digit numbers with more than one exchange
