Dasar Penjumlahan untuk Kelas 1

Front

1 + 1

Back

2

Front

2 + 2

Back

4

Front

3 + 1

Back

4

Front

4 + 2

Back

6

Front

5 + 3

Back

8

Front

6 + 1

Back

7

Front

7 + 2

Back

9

Front

8 + 1

Back

9

Front

9 + 0

Back

9

Front

5 + 5

Back

10