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