Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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