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