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