Oplossen van erafsommen tot 20
Erafsommen
|
1.
7 – 4 =
3
8
1
2
|
2.
5 – 5 =
4
5
0
3
|
3.
10 – 0 =
10
13
5
14
|
4.
4 – 1 =
3
2
8
6
|
|
5.
7 – 2 =
10
2
6
5
|
6.
11 – 1 =
7
4
6
10
|
7.
1 – 0 =
2
5
6
1
|
8.
8 – 3 =
5
7
4
6
|
|
9.
12 – 7 =
10
9
5
4
|
10.
19 – 1 =
23
9
20
18
|
11.
4 – 2 =
4
3
2
5
|
12.
8 – 1 =
3
11
7
6
|
|
13.
17 – 5 =
4
7
12
10
|
14.
17 – 3 =
13
7
2
14
|
15.
16 – 15 =
2
6
1
4
|
16.
10 – 7 =
5
4
7
3
|
|
17.
6 – 1 =
1
2
9
5
|
18.
6 – 2 =
3
4
1
2
|
19.
18 – 13 =
7
6
5
10
|
20.
9 – 4 =
4
5
2
3
|