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