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