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