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