Reken de erbijsom tot 20 uit
Erbijsommen
|
1.
3 + 17 =
|
2.
16 + 1 =
|
3.
12 + 2 =
|
|
4.
14 + 5 =
|
5.
8 + 6 =
|
6.
1 + 9 =
|
|
7.
19 + 0 =
|
8.
6 + 0 =
|
9.
10 + 5 =
|
|
10.
15 + 0 =
|
11.
11 + 0 =
|
12.
9 + 6 =
|
|
13.
7 + 3 =
|
14.
1 + 0 =
|
15.
11 + 6 =
|
|
16.
13 + 1 =
|
17.
4 + 14 =
|
18.
19 + 0 =
|
|
19.
18 + 0 =
|
20.
5 + 7 =
|
21.
10 + 6 =
|
|
22.
8 + 3 =
|
23.
5 + 11 =
|
24.
8 + 5 =
|
|
25.
3 + 1 =
|
26.
17 + 0 =
|
27.
2 + 0 =
|
|
28.
5 + 0 =
|
29.
7 + 4 =
|
30.
5 + 4 =
|
|
31.
13 + 0 =
|
32.
19 + 0 =
|
33.
5 + 8 =
|