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