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