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