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