Rekensommen met eraf tot 20

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

Rekensommen met eraf tot 20
| ANTWOORDEN

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