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