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