Rekensommen met eraf tot 50
Erafsommen
1.
25
–
15
=
2.
25
–
5
=
3.
30
–
30
=
4.
45
–
45
=
5.
45
–
15
=
6.
30
–
30
=
7.
25
–
5
=
8.
25
–
5
=
9.
15
–
0
=
10.
20
–
0
=
11.
45
–
20
=
12.
10
–
5
=
13.
30
–
10
=
14.
5
–
0
=
15.
20
–
0
=
16.
45
–
25
=
17.
20
–
20
=
18.
10
–
5
=
19.
40
–
15
=
20.
40
–
20
=
21.
35
–
5
=
22.
45
–
30
=
23.
15
–
10
=
24.
40
–
40
=
25.
25
–
10
=
26.
5
–
5
=
27.
25
–
0
=
28.
40
–
15
=
29.
20
–
20
=
30.
15
–
5
=
31.
20
–
15
=
32.
25
–
10
=
33.
20
–
15
=
34.
45
–
10
=
35.
35
–
5
=
36.
5
–
5
=
Rekensommen met eraf tot 50
| ANTWOORDEN
Erafsommen
1.
25
–
15
=
10
2.
25
–
5
=
20
3.
30
–
30
=
0
4.
45
–
45
=
0
5.
45
–
15
=
30
6.
30
–
30
=
0
7.
25
–
5
=
20
8.
25
–
5
=
20
9.
15
–
0
=
15
10.
20
–
0
=
20
11.
45
–
20
=
25
12.
10
–
5
=
5
13.
30
–
10
=
20
14.
5
–
0
=
5
15.
20
–
0
=
20
16.
45
–
25
=
20
17.
20
–
20
=
0
18.
10
–
5
=
5
19.
40
–
15
=
25
20.
40
–
20
=
20
21.
35
–
5
=
30
22.
45
–
30
=
15
23.
15
–
10
=
5
24.
40
–
40
=
0
25.
25
–
10
=
15
26.
5
–
5
=
0
27.
25
–
0
=
25
28.
40
–
15
=
25
29.
20
–
20
=
0
30.
15
–
5
=
10
31.
20
–
15
=
5
32.
25
–
10
=
15
33.
20
–
15
=
5
34.
45
–
10
=
35
35.
35
–
5
=
30
36.
5
–
5
=
0