Rekensommen met eraf tot 20

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

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