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