20以内加减法练习题(含连加连减)
0020 以内加减法练习题姓名:_____________ 时间:__________ 做对了_____题18- 5 = 17-11 = 13+ 6 = 17- 5 = 16-10 = 5 - 4 =
20以内加减法练习题(含连加连减)