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