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