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