Rekensommen met eraf tot 20

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

Rekensommen met eraf tot 20
| ANTWOORDEN

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