Oplossen van erafsommen tot 20
Erafsommen
|
1.
17 – 14 =
2
3
6
1
|
2.
15 – 12 =
3
8
5
1
|
3.
13 – 0 =
3
13
6
17
|
4.
14 – 14 =
5
4
0
1
|
|
5.
15 – 2 =
13
5
11
3
|
6.
9 – 5 =
7
3
8
4
|
7.
10 – 3 =
7
2
3
6
|
8.
9 – 1 =
1
8
10
4
|
|
9.
2 – 1 =
2
5
1
4
|
10.
5 – 2 =
7
8
3
1
|
11.
20 – 18 =
2
6
7
4
|
12.
11 – 8 =
1
7
2
3
|
|
13.
9 – 4 =
5
3
10
6
|
14.
11 – 4 =
4
6
1
7
|
15.
2 – 0 =
1
2
3
6
|
16.
3 – 0 =
4
6
5
3
|
|
17.
10 – 3 =
5
8
7
3
|
18.
9 – 6 =
2
5
8
3
|
19.
13 – 10 =
5
3
4
7
|
20.
1 – 1 =
3
1
4
0
|