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