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