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