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