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