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