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