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