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