Rekensommen met eraf tot 20

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

Rekensommen met eraf tot 20
| ANTWOORDEN

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