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