Rekensommen met eraf tot 100

Erafsommen
1.
80
–
80
=
2.
70
–
50
=
3.
40
–
10
=
4.
70
–
40
=
5.
60
–
50
=
6.
100
–
60
=
7.
25
–
0
=
8.
75
–
25
=
9.
60
–
30
=
10.
70
–
55
=
11.
45
–
20
=
12.
30
–
15
=
13.
75
–
60
=
14.
80
–
30
=
15.
55
–
5
=
16.
90
–
55
=
17.
5
–
5
=
18.
10
–
0
=
19.
100
–
100
=
20.
30
–
15
=
21.
80
–
55
=
22.
35
–
30
=
23.
100
–
40
=
24.
60
–
45
=
25.
40
–
10
=
26.
90
–
75
=
27.
75
–
0
=
28.
50
–
0
=
29.
80
–
80
=
30.
35
–
20
=
31.
10
–
0
=
32.
50
–
35
=
33.
5
–
0
=
34.
75
–
30
=
35.
15
–
10
=
36.
95
–
10
=
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Rekensommen met eraf tot 100
| ANTWOORDEN

Erafsommen
1.
80
–
80
=
0
2.
70
–
50
=
20
3.
40
–
10
=
30
4.
70
–
40
=
30
5.
60
–
50
=
10
6.
100
–
60
=
40
7.
25
–
0
=
25
8.
75
–
25
=
50
9.
60
–
30
=
30
10.
70
–
55
=
15
11.
45
–
20
=
25
12.
30
–
15
=
15
13.
75
–
60
=
15
14.
80
–
30
=
50
15.
55
–
5
=
50
16.
90
–
55
=
35
17.
5
–
5
=
0
18.
10
–
0
=
10
19.
100
–
100
=
0
20.
30
–
15
=
15
21.
80
–
55
=
25
22.
35
–
30
=
5
23.
100
–
40
=
60
24.
60
–
45
=
15
25.
40
–
10
=
30
26.
90
–
75
=
15
27.
75
–
0
=
75
28.
50
–
0
=
50
29.
80
–
80
=
0
30.
35
–
20
=
15
31.
10
–
0
=
10
32.
50
–
35
=
15
33.
5
–
0
=
5
34.
75
–
30
=
45
35.
15
–
10
=
5
36.
95
–
10
=
85
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Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen