Erafsommen oplossen tot 1.000

Erafsommen
1.
400
–
300
=
2.
150
–
0
=
3.
100
–
100
=
4.
500
–
150
=
5.
750
–
250
=
6.
100
–
0
=
7.
1000
–
600
=
8.
250
–
0
=
9.
350
–
50
=
10.
600
–
250
=
11.
450
–
0
=
12.
800
–
600
=
13.
100
–
100
=
14.
200
–
150
=
15.
550
–
250
=
16.
400
–
0
=
17.
150
–
50
=
18.
600
–
550
=
19.
650
–
0
=
20.
800
–
150
=
21.
450
–
450
=
22.
450
–
250
=
23.
900
–
650
=
24.
100
–
100
=
25.
750
–
50
=
26.
300
–
200
=
27.
500
–
400
=
28.
900
–
200
=
29.
200
–
100
=
30.
300
–
200
=
31.
100
–
100
=
32.
1000
–
150
=
33.
200
–
50
=
34.
650
–
550
=
35.
1000
–
800
=
36.
1000
–
400
=
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen

Erafsommen oplossen tot 1.000
| ANTWOORDEN

Erafsommen
1.
400
–
300
=
100
2.
150
–
0
=
150
3.
100
–
100
=
0
4.
500
–
150
=
350
5.
750
–
250
=
500
6.
100
–
0
=
100
7.
1000
–
600
=
400
8.
250
–
0
=
250
9.
350
–
50
=
300
10.
600
–
250
=
350
11.
450
–
0
=
450
12.
800
–
600
=
200
13.
100
–
100
=
0
14.
200
–
150
=
50
15.
550
–
250
=
300
16.
400
–
0
=
400
17.
150
–
50
=
100
18.
600
–
550
=
50
19.
650
–
0
=
650
20.
800
–
150
=
650
21.
450
–
450
=
0
22.
450
–
250
=
200
23.
900
–
650
=
250
24.
100
–
100
=
0
25.
750
–
50
=
700
26.
300
–
200
=
100
27.
500
–
400
=
100
28.
900
–
200
=
700
29.
200
–
100
=
100
30.
300
–
200
=
100
31.
100
–
100
=
0
32.
1000
–
150
=
850
33.
200
–
50
=
150
34.
650
–
550
=
100
35.
1000
–
800
=
200
36.
1000
–
400
=
600
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen