Platzhalteraufgaben [1]
Minusrechnen
1.
–
20
=
899
2.
–
40
=
275
3.
–
90
=
182
4.
–
100
=
472
5.
–
20
=
255
6.
–
70
=
49
7.
–
90
=
764
8.
–
100
=
336
9.
–
70
=
602
10.
–
90
=
731
11.
–
100
=
498
12.
–
30
=
390
13.
–
10
=
439
14.
–
40
=
266
15.
–
10
=
219
16.
–
30
=
639
17.
–
80
=
805
18.
–
20
=
145
19.
–
50
=
634
20.
–
60
=
891
21.
–
30
=
701
22.
–
40
=
858
23.
–
100
=
637
24.
–
10
=
261
25.
–
20
=
813
26.
–
10
=
222
27.
–
20
=
477
28.
–
60
=
490
29.
–
70
=
40
30.
–
90
=
219
31.
–
40
=
809
32.
–
50
=
695
33.
–
20
=
709
34.
–
100
=
696
35.
–
70
=
624
36.
–
90
=
846