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