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