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