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