Oefen de erbijsommen tot 100

Erbijsommen
1.
15
+
55
=
2.
15
+
65
=
3.
40
+
45
=
4.
45
+
55
=
5.
30
+
45
=
6.
20
+
55
=
7.
30
+
45
=
8.
35
+
60
=
9.
35
+
45
=
10.
40
+
45
=
11.
10
+
75
=
12.
25
+
25
=
13.
5
+
85
=
14.
0
+
100
=
15.
10
+
45
=
16.
5
+
90
=
17.
10
+
65
=
18.
15
+
70
=
19.
20
+
80
=
20.
15
+
45
=
21.
5
+
50
=
22.
10
+
85
=
23.
20
+
55
=
24.
10
+
20
=
25.
30
+
60
=
26.
15
+
25
=
27.
0
+
95
=
28.
30
+
65
=
29.
40
+
60
=
30.
20
+
55
=
31.
20
+
25
=
32.
5
+
75
=
33.
20
+
40
=
34.
20
+
25
=
35.
10
+
55
=
36.
5
+
40
=
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Oefen de erbijsommen tot 100
| ANTWOORDEN

Erbijsommen
1.
15
+
55
=
70
2.
15
+
65
=
80
3.
40
+
45
=
85
4.
45
+
55
=
100
5.
30
+
45
=
75
6.
20
+
55
=
75
7.
30
+
45
=
75
8.
35
+
60
=
95
9.
35
+
45
=
80
10.
40
+
45
=
85
11.
10
+
75
=
85
12.
25
+
25
=
50
13.
5
+
85
=
90
14.
0
+
100
=
100
15.
10
+
45
=
55
16.
5
+
90
=
95
17.
10
+
65
=
75
18.
15
+
70
=
85
19.
20
+
80
=
100
20.
15
+
45
=
60
21.
5
+
50
=
55
22.
10
+
85
=
95
23.
20
+
55
=
75
24.
10
+
20
=
30
25.
30
+
60
=
90
26.
15
+
25
=
40
27.
0
+
95
=
95
28.
30
+
65
=
95
29.
40
+
60
=
100
30.
20
+
55
=
75
31.
20
+
25
=
45
32.
5
+
75
=
80
33.
20
+
40
=
60
34.
20
+
25
=
45
35.
10
+
55
=
65
36.
5
+
40
=
45
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen