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