Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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