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