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