Oefen de erbijsommen tot 100

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

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