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