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