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