Rekensommen met eraf tot 20

Erafsommen
1.
4
–
3
=
2.
6
–
0
=
3.
18
–
8
=
4.
11
–
11
=
5.
7
–
3
=
6.
11
–
9
=
7.
3
–
0
=
8.
18
–
17
=
9.
18
–
6
=
10.
19
–
12
=
11.
15
–
12
=
12.
8
–
3
=
13.
2
–
2
=
14.
16
–
9
=
15.
11
–
8
=
16.
17
–
5
=
17.
17
–
13
=
18.
11
–
0
=
19.
5
–
4
=
20.
10
–
0
=
21.
7
–
5
=
22.
16
–
1
=
23.
12
–
5
=
24.
14
–
9
=
25.
12
–
7
=
26.
7
–
0
=
27.
19
–
8
=
28.
6
–
4
=
29.
10
–
0
=
30.
6
–
5
=
31.
8
–
0
=
32.
4
–
0
=
33.
17
–
4
=
34.
11
–
4
=
35.
16
–
3
=
36.
1
–
0
=
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Rekensommen met eraf tot 20
| ANTWOORDEN

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