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