Maak de erbijsom en erafsom tot 20
In de mix
|
1.
10 – 6 =
4
1
|
2.
9 + 6 =
1
15
|
3.
7 – 7 =
0
2
|
4.
10 – 7 =
3
1
|
|
5.
3 + 12 =
15
1
|
6.
1 – 1 =
2
0
|
7.
4 + 14 =
18
2
|
8.
15 + 4 =
19
2
|
|
9.
7 – 6 =
1
2
|
10.
5 + 6 =
11
1
|
11.
1 + 12 =
13
1
|
12.
12 – 2 =
10
1
|
|
13.
1 + 0 =
2
1
|
14.
19 – 11 =
8
1
|
15.
5 + 0 =
1
5
|
16.
13 – 13 =
0
2
|
|
17.
18 – 15 =
1
3
|
18.
2 – 1 =
1
2
|
19.
8 + 11 =
19
2
|
20.
6 – 3 =
1
3
|