けいさんれんしゅう
16 + 1
=
16 - 3
=
18 + 1
=
15 - 2
=
11 - 1
=
18 - 3
=
17 + 2
=
7 - 7
=
10 - 6
=
18 - 8
=
17 + 1
=
10 + 2
=
8 + 11
=
4 + 1
=
12 - 1
=
7 + 10
=
8 - 1
=
2 + 4
=
3 - 3
=
8 - 6
=
せいかい
まちがい