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