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