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