Rekensommen met eraf tot 20

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

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