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