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