Oefen de erafsommen tot 20

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

Oefen de erafsommen tot 20
| ANTWOORDEN

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