Rekensommen met eraf tot 20

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

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