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