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