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