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