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