Rekensommen met eraf tot 20

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

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