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