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