Oefen de erbijsommen tot 100

Erbijsommen
1.
55
+
0
=
55
45
50
65
2.
0
+
100
=
80
90
85
100
3.
45
+
35
=
75
80
90
85
4.
40
+
5
=
35
45
55
50
5.
70
+
25
=
80
75
95
90
6.
10
+
75
=
85
95
80
90
7.
0
+
45
=
40
35
55
45
8.
5
+
70
=
85
70
75
65
9.
35
+
15
=
40
60
45
50
10.
60
+
5
=
65
55
70
75
11.
35
+
40
=
65
70
75
85
12.
40
+
30
=
65
80
70
75
13.
35
+
10
=
40
45
35
55
14.
30
+
25
=
45
65
50
55
15.
85
+
10
=
75
95
80
85
16.
5
+
40
=
50
35
45
40
17.
10
+
20
=
40
30
20
25
18.
10
+
60
=
65
80
70
60
19.
20
+
70
=
70
90
75
85
20.
25
+
40
=
60
65
75
70
21.
30
+
10
=
35
40
50
30
© JuniorEinstein.nl
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Oefen de erbijsommen tot 100
| ANTWOORDEN

Erbijsommen
1.
55
+
0
=
55
45
50
65
2.
0
+
100
=
80
90
85
100
3.
45
+
35
=
75
80
90
85
4.
40
+
5
=
35
45
55
50
5.
70
+
25
=
80
75
95
90
6.
10
+
75
=
85
95
80
90
7.
0
+
45
=
40
35
55
45
8.
5
+
70
=
85
70
75
65
9.
35
+
15
=
40
60
45
50
10.
60
+
5
=
65
55
70
75
11.
35
+
40
=
65
70
75
85
12.
40
+
30
=
65
80
70
75
13.
35
+
10
=
40
45
35
55
14.
30
+
25
=
45
65
50
55
15.
85
+
10
=
75
95
80
85
16.
5
+
40
=
50
35
45
40
17.
10
+
20
=
40
30
20
25
18.
10
+
60
=
65
80
70
60
19.
20
+
70
=
70
90
75
85
20.
25
+
40
=
60
65
75
70
21.
30
+
10
=
35
40
50
30
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen