Platzhalteraufgaben [1]
Minusrechnen
1.
–
80
=
487
2.
–
20
=
155
3.
–
20
=
271
4.
–
80
=
391
5.
–
10
=
261
6.
–
80
=
727
7.
–
50
=
527
8.
–
70
=
105
9.
–
40
=
458
10.
–
50
=
896
11.
–
70
=
407
12.
–
20
=
650
13.
–
60
=
301
14.
–
100
=
811
15.
–
80
=
343
16.
–
30
=
809
17.
–
70
=
379
18.
–
70
=
720
19.
–
10
=
246
20.
–
50
=
920
21.
–
50
=
946
22.
–
10
=
471
23.
–
20
=
401
24.
–
60
=
499
25.
–
90
=
204
26.
–
100
=
795
27.
–
100
=
577
28.
–
70
=
430
29.
–
80
=
788
30.
–
20
=
210
31.
–
40
=
897
32.
–
30
=
372
33.
–
40
=
303
34.
–
90
=
71
35.
–
90
=
668
36.
–
50
=
398