Oefen de erbijsom en erafsom tot 20

In de mix
1.
13 5 =
1
8
2.
5 2 =
3
1
3.
18 2 =
2
16
4.
4 1 =
3
1
5.
3 1 =
2
1
6.
3 3 =
0
2
7.
19 + 1 =
2
20
8.
19 8 =
11
1
9.
19 14 =
5
1
10.
15 + 1 =
16
2
11.
17 2 =
1
15
12.
12 4 =
8
1
13.
10 10 =
0
2
14.
10 4 =
1
6
15.
3 + 1 =
1
4
16.
7 4 =
1
3
17.
3 1 =
2
1
18.
18 11 =
1
7
19.
4 0 =
1
4
20.
4 + 8 =
12
1

Oefen de erbijsom en erafsom tot 20
| ANTWOORDEN

In de mix
1.
13 5 =
1
8
2.
5 2 =
3
1
3.
18 2 =
2
16
4.
4 1 =
3
1
5.
3 1 =
2
1
6.
3 3 =
0
2
7.
19 + 1 =
2
20
8.
19 8 =
11
1
9.
19 14 =
5
1
10.
15 + 1 =
16
2
11.
17 2 =
1
15
12.
12 4 =
8
1
13.
10 10 =
0
2
14.
10 4 =
1
6
15.
3 + 1 =
1
4
16.
7 4 =
1
3
17.
3 1 =
2
1
18.
18 11 =
1
7
19.
4 0 =
1
4
20.
4 + 8 =
12
1