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