100道凑十法练习题

凑十法姓名:9 + 6 = 9 + 5 = 9 + 3 = 9 + 2 = 9 + 8 = 9 + 9 = 8 + 7 = 8 + 9 = 8 + 5 = 8 + 4 = 7 + 9 = 7 + 8

腾讯文库100道凑十法练习题100道凑十法练习题