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