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