Reken de erafsommen tot 100 uit

Erafsommen
1.
80
-
20
=
55
60
2.
5
-
5
=
0
5
3.
15
-
15
=
5
0
4.
20
-
0
=
20
10
5.
45
-
0
=
55
45
6.
45
-
0
=
55
45
7.
25
-
25
=
10
0
8.
45
-
40
=
10
5
9.
55
-
40
=
15
25
10.
25
-
15
=
10
0
11.
25
-
25
=
0
15
12.
75
-
15
=
60
50
13.
35
-
30
=
5
10
14.
95
-
55
=
40
45
15.
20
-
10
=
20
10
16.
20
-
20
=
15
0
17.
65
-
10
=
55
65
18.
35
-
20
=
15
25
19.
40
-
40
=
15
0
20.
70
-
5
=
65
55
21.
55
-
0
=
60
55
22.
60
-
60
=
5
0
23.
80
-
70
=
10
0
24.
30
-
0
=
30
40
25.
95
-
95
=
15
0
26.
15
-
15
=
0
5
27.
35
-
20
=
15
25
28.
65
-
40
=
30
25
© JuniorEinstein.nl
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Reken de erafsommen tot 100 uit
| ANTWOORDEN

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