Erafsommen oplossen tot 20

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

Erafsommen oplossen tot 20
| ANTWOORDEN

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