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