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