Oefen de erafsommen tot 20

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

Oefen de erafsommen tot 20
| ANTWOORDEN

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