Xiaoming owes his father 490, his mother 490, and * * * owes 490+490=980. But Xiao Ming doesn't owe himself a penny. On the contrary, he still has 10 yuan.

10 yuan and a pair of shoes are worth 970. In this way, Xiao Ming has something worth 10+970 = 980 yuan. This value is borrowed from parents' 980 yuan money.