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