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