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