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