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