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