Rekensommen met eraf tot 20

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

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