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