Oplossen van erafsommen tot 20
Erafsommen
|
1.
20 – 1 =
5
19
22
20
|
2.
7 – 0 =
11
6
7
10
|
3.
20 – 3 =
22
17
16
15
|
4.
7 – 6 =
6
2
1
3
|
|
5.
10 – 0 =
12
3
1
10
|
6.
10 – 7 =
1
8
3
5
|
7.
13 – 6 =
3
2
1
7
|
8.
17 – 10 =
7
5
12
3
|
|
9.
16 – 16 =
0
4
3
1
|
10.
10 – 5 =
3
5
7
2
|
11.
18 – 10 =
8
11
5
6
|
12.
2 – 1 =
3
1
5
4
|
|
13.
13 – 1 =
14
11
12
7
|
14.
14 – 8 =
3
10
6
5
|
15.
17 – 4 =
4
13
2
7
|
16.
6 – 4 =
3
7
1
2
|
|
17.
4 – 2 =
1
7
4
2
|
18.
4 – 2 =
2
1
3
6
|
19.
19 – 10 =
14
9
12
3
|
20.
10 – 9 =
4
3
2
1
|