Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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