Oefen de erafsommen tot 20

Erafsommen
1.
16
–
8
=
2.
16
–
7
=
3.
12
–
6
=
4.
3
–
0
=
5.
10
–
7
=
6.
16
–
2
=
7.
1
–
1
=
8.
10
–
9
=
9.
2
–
0
=
10.
14
–
6
=
11.
1
–
1
=
12.
3
–
3
=
13.
17
–
15
=
14.
1
–
0
=
15.
19
–
11
=
16.
19
–
5
=
17.
18
–
8
=
18.
10
–
9
=
19.
12
–
10
=
20.
2
–
0
=
21.
14
–
13
=
22.
16
–
10
=
23.
15
–
0
=
24.
4
–
2
=
25.
4
–
2
=
26.
20
–
11
=
27.
12
–
2
=
28.
14
–
12
=
29.
9
–
2
=
30.
13
–
11
=
31.
4
–
2
=
32.
12
–
12
=
33.
10
–
4
=
34.
14
–
12
=
35.
16
–
2
=
36.
8
–
3
=
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Oefen de erafsommen tot 20
| ANTWOORDEN

Erafsommen
1.
16
–
8
=
8
2.
16
–
7
=
9
3.
12
–
6
=
6
4.
3
–
0
=
3
5.
10
–
7
=
3
6.
16
–
2
=
14
7.
1
–
1
=
0
8.
10
–
9
=
1
9.
2
–
0
=
2
10.
14
–
6
=
8
11.
1
–
1
=
0
12.
3
–
3
=
0
13.
17
–
15
=
2
14.
1
–
0
=
1
15.
19
–
11
=
8
16.
19
–
5
=
14
17.
18
–
8
=
10
18.
10
–
9
=
1
19.
12
–
10
=
2
20.
2
–
0
=
2
21.
14
–
13
=
1
22.
16
–
10
=
6
23.
15
–
0
=
15
24.
4
–
2
=
2
25.
4
–
2
=
2
26.
20
–
11
=
9
27.
12
–
2
=
10
28.
14
–
12
=
2
29.
9
–
2
=
7
30.
13
–
11
=
2
31.
4
–
2
=
2
32.
12
–
12
=
0
33.
10
–
4
=
6
34.
14
–
12
=
2
35.
16
–
2
=
14
36.
8
–
3
=
5
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Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen