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Mirela9077
a fost răspuns

2

4. Calculaţi:
a) 20, 21, 22, 23, 24;
b) 30, 31, 32, 33, 34
c) 40,4', 42,43,44; d) 50, 51, 52, 53, 54.​

Răspuns :

Deliaanton819000

Răspuns:

a) 20+21-22+23-24=18

b) 30+31-32+33-34=28

c) 40+41-42+43-44=38

d) 50+51-52+53-54=48

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