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