Rekensommen met eraf tot 20

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

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