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