Question

Bună , mă ajută cineva la exerciţiile încercuite? Vă rog frumos, azi am avut scoala si na, va rog ajutaţi-ma.

Answer 1

Răspuns:

3.

a. 505, 2020, 8080, 32320, 128280

505×4=2020

2020×4=8080

8080×4=32320

32320×4=129280

b. 505, 1010, 1515, 2020, 2526

505×2=1010

505×3=1515

505×4=2020

505×5=2525

c. 4400, 2200, 1100, 550, 275

4400:2=2200

2200÷2=1100

1100:2=550

550:2=275

d. 4400, 4040, 3680, 3320, 2960

4400-360=4040

4040-360=3680

3680-360=3320

3320-360=2960

e. 1m25cm, 2m, 2m75cm, 3m50cm, 4m25cm

1m25cm+75cm=1m100cm=2m

2m+75cn=2m75cm

2m75cm+75cm=2m150cm=3m50cm

3m50cm+75cm=3m125cm=4m25cm

f. 4t, 2t, 1t, 500kg, 250kg

4t:2=2t

2t:2=1t

1t:2=1000kg:2=500kg

500kg:2=250kg

4. a.

I zi = 23 cisterne benzină

II zi = 27 cisterne benzină

ttotal 300000 litri benzină

total: 23+27=50 cisterne

capacitatea unei cisterne: 300000:50=6000 litri

I zi: 23×6000=138000 litri

II zi: 27×6000=162000 litri