Rekensommen met eraf tot 100

Erafsommen
1.
50
–
50
=
2.
10
–
10
=
3.
80
–
80
=
4.
5
–
5
=
5.
10
–
10
=
6.
90
–
35
=
7.
75
–
50
=
8.
35
–
30
=
9.
75
–
25
=
10.
80
–
40
=
11.
15
–
10
=
12.
25
–
10
=
13.
5
–
5
=
14.
70
–
0
=
15.
35
–
5
=
16.
5
–
5
=
17.
20
–
5
=
18.
85
–
85
=
19.
10
–
5
=
20.
65
–
0
=
21.
20
–
20
=
22.
55
–
0
=
23.
25
–
10
=
24.
55
–
50
=
25.
70
–
25
=
26.
15
–
10
=
27.
40
–
5
=
28.
100
–
65
=
29.
25
–
15
=
30.
20
–
20
=
31.
45
–
10
=
32.
100
–
100
=
33.
70
–
45
=
34.
5
–
0
=
35.
45
–
45
=
36.
75
–
40
=
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Rekensommen met eraf tot 100
| ANTWOORDEN

Erafsommen
1.
50
–
50
=
0
2.
10
–
10
=
0
3.
80
–
80
=
0
4.
5
–
5
=
0
5.
10
–
10
=
0
6.
90
–
35
=
55
7.
75
–
50
=
25
8.
35
–
30
=
5
9.
75
–
25
=
50
10.
80
–
40
=
40
11.
15
–
10
=
5
12.
25
–
10
=
15
13.
5
–
5
=
0
14.
70
–
0
=
70
15.
35
–
5
=
30
16.
5
–
5
=
0
17.
20
–
5
=
15
18.
85
–
85
=
0
19.
10
–
5
=
5
20.
65
–
0
=
65
21.
20
–
20
=
0
22.
55
–
0
=
55
23.
25
–
10
=
15
24.
55
–
50
=
5
25.
70
–
25
=
45
26.
15
–
10
=
5
27.
40
–
5
=
35
28.
100
–
65
=
35
29.
25
–
15
=
10
30.
20
–
20
=
0
31.
45
–
10
=
35
32.
100
–
100
=
0
33.
70
–
45
=
25
34.
5
–
0
=
5
35.
45
–
45
=
0
36.
75
–
40
=
35
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen