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