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