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