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