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