Rekensommen met eraf tot 100

Erafsommen
1.
100
–
90
=
2.
70
–
20
=
3.
5
–
0
=
4.
15
–
10
=
5.
50
–
40
=
6.
50
–
5
=
7.
100
–
0
=
8.
60
–
10
=
9.
20
–
10
=
10.
15
–
5
=
11.
100
–
40
=
12.
60
–
5
=
13.
40
–
10
=
14.
80
–
60
=
15.
100
–
60
=
16.
55
–
25
=
17.
45
–
0
=
18.
45
–
15
=
19.
65
–
45
=
20.
90
–
10
=
21.
50
–
45
=
22.
50
–
20
=
23.
55
–
55
=
24.
80
–
80
=
25.
40
–
40
=
26.
75
–
0
=
27.
50
–
30
=
28.
70
–
60
=
29.
90
–
85
=
30.
90
–
75
=
31.
95
–
40
=
32.
100
–
20
=
33.
35
–
0
=
34.
95
–
60
=
35.
15
–
5
=
36.
5
–
5
=
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Rekensommen met eraf tot 100
| ANTWOORDEN

Erafsommen
1.
100
–
90
=
10
2.
70
–
20
=
50
3.
5
–
0
=
5
4.
15
–
10
=
5
5.
50
–
40
=
10
6.
50
–
5
=
45
7.
100
–
0
=
100
8.
60
–
10
=
50
9.
20
–
10
=
10
10.
15
–
5
=
10
11.
100
–
40
=
60
12.
60
–
5
=
55
13.
40
–
10
=
30
14.
80
–
60
=
20
15.
100
–
60
=
40
16.
55
–
25
=
30
17.
45
–
0
=
45
18.
45
–
15
=
30
19.
65
–
45
=
20
20.
90
–
10
=
80
21.
50
–
45
=
5
22.
50
–
20
=
30
23.
55
–
55
=
0
24.
80
–
80
=
0
25.
40
–
40
=
0
26.
75
–
0
=
75
27.
50
–
30
=
20
28.
70
–
60
=
10
29.
90
–
85
=
5
30.
90
–
75
=
15
31.
95
–
40
=
55
32.
100
–
20
=
80
33.
35
–
0
=
35
34.
95
–
60
=
35
35.
15
–
5
=
10
36.
5
–
5
=
0
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen