Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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