Oplossen van erafsommen tot 20
Erafsommen
|
1.
17 – 0 =
6
13
17
11
|
2.
8 – 3 =
1
2
5
8
|
3.
17 – 13 =
9
5
7
4
|
4.
5 – 3 =
4
2
7
5
|
|
5.
8 – 5 =
8
4
2
3
|
6.
8 – 6 =
4
3
5
2
|
7.
17 – 5 =
15
13
7
12
|
8.
13 – 12 =
6
1
2
3
|
|
9.
4 – 3 =
1
6
4
5
|
10.
17 – 12 =
4
9
5
2
|
11.
18 – 2 =
16
21
5
1
|
12.
15 – 4 =
11
8
7
13
|
|
13.
9 – 0 =
9
10
1
13
|
14.
5 – 2 =
8
4
5
3
|
15.
13 – 8 =
9
4
5
7
|
16.
15 – 8 =
12
6
7
3
|
|
17.
1 – 0 =
5
6
1
2
|
18.
18 – 10 =
10
1
8
7
|
19.
10 – 6 =
8
3
5
4
|
20.
7 – 7 =
2
1
3
0
|