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