Subtract multiples of 100 (with exchange) timed
Subtract multiples of 100 from 4-digit numbers with exchange.
Subtract multiples of 100 (with exchange) timed
Subtract multiples of 100 from 4-digit numbers with exchange.
Subtract multiples of 100 from 4-digit numbers with exchange.
Subtract multiples of 100 from 4-digit numbers with exchange.