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