Rekensommen met eraf tot 1.000

Erafsommen
1.
100
–
100
=
2.
200
–
50
=
3.
500
–
0
=
4.
250
–
0
=
5.
600
–
300
=
6.
250
–
100
=
7.
800
–
400
=
8.
300
–
150
=
9.
250
–
250
=
10.
950
–
800
=
11.
700
–
50
=
12.
750
–
600
=
13.
400
–
150
=
14.
150
–
100
=
15.
550
–
450
=
16.
450
–
350
=
17.
450
–
400
=
18.
300
–
50
=
19.
950
–
350
=
20.
400
–
250
=
21.
100
–
0
=
22.
700
–
700
=
23.
500
–
500
=
24.
100
–
50
=
25.
400
–
50
=
26.
400
–
300
=
27.
450
–
50
=
28.
600
–
50
=
29.
950
–
400
=
30.
1000
–
250
=
31.
550
–
400
=
32.
450
–
450
=
33.
600
–
400
=
34.
550
–
450
=
35.
900
–
900
=
36.
850
–
500
=
© JuniorEinstein.nl
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Rekensommen met eraf tot 1.000
| ANTWOORDEN

Erafsommen
1.
100
–
100
=
0
2.
200
–
50
=
150
3.
500
–
0
=
500
4.
250
–
0
=
250
5.
600
–
300
=
300
6.
250
–
100
=
150
7.
800
–
400
=
400
8.
300
–
150
=
150
9.
250
–
250
=
0
10.
950
–
800
=
150
11.
700
–
50
=
650
12.
750
–
600
=
150
13.
400
–
150
=
250
14.
150
–
100
=
50
15.
550
–
450
=
100
16.
450
–
350
=
100
17.
450
–
400
=
50
18.
300
–
50
=
250
19.
950
–
350
=
600
20.
400
–
250
=
150
21.
100
–
0
=
100
22.
700
–
700
=
0
23.
500
–
500
=
0
24.
100
–
50
=
50
25.
400
–
50
=
350
26.
400
–
300
=
100
27.
450
–
50
=
400
28.
600
–
50
=
550
29.
950
–
400
=
550
30.
1000
–
250
=
750
31.
550
–
400
=
150
32.
450
–
450
=
0
33.
600
–
400
=
200
34.
550
–
450
=
100
35.
900
–
900
=
0
36.
850
–
500
=
350
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen