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