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