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