Oplossen van erafsommen tot 20
Erafsommen
|
1.
4 – 4 =
5
3
2
0
|
2.
13 – 3 =
3
4
10
1
|
3.
16 – 16 =
2
0
1
4
|
4.
4 – 0 =
1
4
5
2
|
|
5.
17 – 15 =
7
5
2
6
|
6.
17 – 17 =
2
3
0
5
|
7.
1 – 0 =
6
3
1
5
|
8.
3 – 3 =
0
5
2
1
|
|
9.
13 – 5 =
1
11
5
8
|
10.
18 – 1 =
11
15
22
17
|
11.
2 – 0 =
6
4
7
2
|
12.
3 – 1 =
7
1
2
5
|
|
13.
19 – 0 =
13
24
18
19
|
14.
3 – 2 =
5
3
1
2
|
15.
2 – 0 =
5
6
2
1
|
16.
5 – 4 =
3
1
2
5
|
|
17.
18 – 1 =
8
17
9
1
|
18.
1 – 0 =
2
1
4
3
|
19.
18 – 10 =
7
6
13
8
|
20.
14 – 13 =
1
4
5
2
|