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