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