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