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