Rekensommen met eraf tot 20

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

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