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