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