Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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