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