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