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