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