Question

efectuează prin scăderea repetată
21:7
28:7
18:2
32:8 ​

Answer 1

Răspuns:

21:7=3

21-7=14

14-7=7

7-7=0

28:7=4

28-7=21

21-7=14

14-7=7

7-7=0

18:2=9

18-2=16

16-2=14

14-2=12

12-2=10

10-2=8

8-2=6

6-2=4

4-2=2

2-2=0

32:8=4

32-8=24

24-8=16

16-8=8

8-8=0