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