Platzhalteraufgaben [1]
Minusrechnen
1.
–
80
=
891
2.
–
100
=
113
3.
–
100
=
492
4.
–
20
=
686
5.
–
30
=
640
6.
–
10
=
671
7.
–
40
=
178
8.
–
50
=
688
9.
–
80
=
107
10.
–
20
=
307
11.
–
100
=
150
12.
–
10
=
615
13.
–
30
=
426
14.
–
100
=
550
15.
–
90
=
837
16.
–
40
=
703
17.
–
70
=
532
18.
–
60
=
441
19.
–
70
=
694
20.
–
80
=
51
21.
–
80
=
790
22.
–
30
=
72
23.
–
80
=
799
24.
–
10
=
795
25.
–
90
=
731
26.
–
30
=
698
27.
–
60
=
580
28.
–
40
=
460
29.
–
30
=
739
30.
–
50
=
222
31.
–
80
=
97
32.
–
30
=
791
33.
–
90
=
370
34.
–
50
=
172
35.
–
100
=
624
36.
–
40
=
417