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