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