浙教版一年级数学上册《9以内的减法》练习题

3 - 1 - 0 =
0 + 7 - 7 =
0 - 0 + 3 =
0 - 0 - 0 =
5 + 9 - 8 =
1 + 6 + 9 =
8 - 5 - 0 =
2 - 2 - 0 =
5 + 3 - 7 =
2 + 2 + 8 =
8 - 7 + 7 =