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