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