1 + 9 =
10
1 + 9 =
10
2 + 8 =
10
2 + 8 =
10
3 + 7 =
10
3 + 7 =
10
4 + 6 =
10
4 + 6 =
10
5 + 5 =
10
5 + 5 =
10
6 + 4 =
10
6 + 4 =
10
7 + 3 =
10
7 + 3 =
10
8 + 2 =
10
8 + 2 =
10
9 + 1 =
10
9 + 1 =
10
10 - 1 =
9
10 - 1 =
9
10 – 2 =
8
10 – 2 =
8
10 – 3 =
7
10 – 3 =
7
10 – 4 =
6
10 – 4 =
6
10 – 5 =
5
10 – 5 =
5
10 – 6 =
4
10 – 6 =
4
10 – 7 =
3
10 – 7 =
3
10 – 8 =
2
10 – 8 =
2
10 – 9 =
1
10 – 9 =
1
Trang 43 + 7 =
6 + 3 =
3 + 7 = 10
6 + 3 = 9
4 + 5 =
10 - 5 =
4 + 5 = 9
10 - 5 = 5
Trang 55
10
7
3 8
1
Trang 6-4 + 3 = 7
Trang 710 - 3 = 7