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