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