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