20以内加减法(Excel版)
(1)16-10 =(26)5 - 4 =(51)9 - 4 =(76)16- 1 =(2)7 +10 =(27)9 - 0 =(52)18+ 1 =(77)6 +10 =(3)4 - 0 =(28)
20以内加减法(Excel版)