Oplossen van erafsommen tot 20
Erafsommen
|
1.
2 – 1 =
4
2
3
1
|
2.
11 – 1 =
13
1
2
10
|
3.
11 – 8 =
7
3
1
6
|
4.
10 – 0 =
10
3
8
1
|
|
5.
9 – 5 =
4
3
6
1
|
6.
20 – 2 =
22
23
10
18
|
7.
2 – 0 =
6
2
4
1
|
8.
19 – 16 =
3
4
7
5
|
|
9.
4 – 0 =
4
8
7
9
|
10.
10 – 7 =
1
6
3
7
|
11.
20 – 16 =
5
4
8
1
|
12.
9 – 7 =
7
3
2
6
|
|
13.
17 – 1 =
16
13
5
11
|
14.
19 – 7 =
5
12
9
13
|
15.
12 – 7 =
1
9
8
5
|
16.
12 – 12 =
2
0
5
4
|
|
17.
7 – 4 =
4
3
2
7
|
18.
2 – 0 =
7
5
1
2
|
19.
12 – 6 =
7
11
5
6
|
20.
9 – 6 =
8
7
5
3
|