Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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