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