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