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