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