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