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