Erbijsommen tot 20
Erbijsommen
|
1.
12 + 3 =
4
15
|
2.
13 + 0 =
15
13
|
3.
17 + 0 =
11
17
|
4.
8 + 9 =
11
17
|
|
5.
17 + 2 =
19
3
|
6.
12 + 8 =
20
3
|
7.
8 + 9 =
11
17
|
8.
2 + 11 =
13
4
|
|
9.
1 + 7 =
2
8
|
10.
1 + 6 =
7
6
|
11.
18 + 0 =
9
18
|
12.
15 + 4 =
19
10
|
|
13.
19 + 1 =
5
20
|
14.
3 + 16 =
19
3
|
15.
11 + 0 =
11
5
|
16.
12 + 8 =
20
8
|
|
17.
18 + 1 =
19
10
|
18.
12 + 5 =
17
10
|
19.
1 + 6 =
3
7
|
20.
8 + 10 =
12
18
|