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