Rekensommen met eraf tot 100

Erafsommen
1.
90
–
45
=
2.
55
–
20
=
3.
100
–
65
=
4.
40
–
25
=
5.
90
–
55
=
6.
70
–
20
=
7.
60
–
50
=
8.
50
–
20
=
9.
50
–
25
=
10.
45
–
35
=
11.
60
–
55
=
12.
35
–
0
=
13.
55
–
10
=
14.
20
–
10
=
15.
75
–
30
=
16.
60
–
35
=
17.
30
–
25
=
18.
5
–
5
=
19.
55
–
45
=
20.
10
–
10
=
21.
15
–
0
=
22.
70
–
55
=
23.
100
–
55
=
24.
5
–
0
=
25.
30
–
5
=
26.
60
–
35
=
27.
20
–
20
=
28.
45
–
40
=
29.
15
–
0
=
30.
95
–
40
=
31.
85
–
15
=
32.
40
–
25
=
33.
50
–
15
=
34.
85
–
55
=
35.
75
–
25
=
36.
60
–
10
=
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Rekensommen met eraf tot 100
| ANTWOORDEN

Erafsommen
1.
90
–
45
=
45
2.
55
–
20
=
35
3.
100
–
65
=
35
4.
40
–
25
=
15
5.
90
–
55
=
35
6.
70
–
20
=
50
7.
60
–
50
=
10
8.
50
–
20
=
30
9.
50
–
25
=
25
10.
45
–
35
=
10
11.
60
–
55
=
5
12.
35
–
0
=
35
13.
55
–
10
=
45
14.
20
–
10
=
10
15.
75
–
30
=
45
16.
60
–
35
=
25
17.
30
–
25
=
5
18.
5
–
5
=
0
19.
55
–
45
=
10
20.
10
–
10
=
0
21.
15
–
0
=
15
22.
70
–
55
=
15
23.
100
–
55
=
45
24.
5
–
0
=
5
25.
30
–
5
=
25
26.
60
–
35
=
25
27.
20
–
20
=
0
28.
45
–
40
=
5
29.
15
–
0
=
15
30.
95
–
40
=
55
31.
85
–
15
=
70
32.
40
–
25
=
15
33.
50
–
15
=
35
34.
85
–
55
=
30
35.
75
–
25
=
50
36.
60
–
10
=
50
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen