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