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