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