Oefen de erafsommen tot 20

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

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