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