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