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