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