Question

Calculati :
a)2300cm patrati+170 cm patrati-1000,5 cm patrati=.......cm patrati
b)400000cm patrati + 79 m patrati=..........m patrati
c)8*3m patrati-1700dm patrati=......dm patrati
d)5*(18hm patrati -200dam patrati)=....hm patrati
e)6,5003hm patrati-24156m patrati+9000dm patrati=....m patrati
f)10la puterea a6*5cm patrati+10la puterea a 4*3dm patrati=....m patrati
Va rog este urgent!! Dau coroana

Answer 1

Răspuns:

Explicație pas cu pas:

a)2300cm²+170cm²-1000,5cm²=.......cm²

2300cm²+170cm²-1000,5cm²=2470cm²-1000,5cm²=1469,5cm²

b)400000cm²+ 79m²=..........m²

1cm²=0,0001m² ⇒ 400000cm²=400000:10000=40m²

400000cm²+ 79 m²=40m²+79m²=119m²

c)8x3m²-1700dm²=......dm²

1m²=100dm² ⇒ 24m²=24x100=2400dm²

8*3m²-1700dm²=24m²-1700dm²=2400dm²-1700dm²=700dm²

d)5x(18hm² -200dam²)=....hm²

1dam²=0,1hm² ⇒ 200dam²=200:10=20dam²

5x(18hm² -200dam²)=5x(18hm² -20hm²)=5x(-2hm²)=-10hm²

e)6,5003hm²-24156m²+9000dm²=....m²

1hm²=10000m² ⇒ 6,5003hm²=6,5003x10000=65003m²

1dm²=0,01m² ⇒ 9000dm²=9000:100=90m²

6,5003hm²-24156m²+9000dm²=65003m²-24156m²+90m²=40847m²+90m²=40937m²

f)10^6x5cm²+10^4x3dm²=....m²

1cm²=0,0001m² ⇒ 10^6x5:10000 = 500m²

1dm²=0,01m² ⇒ 10^4x3:100=300m²

10^6x5cm²+10^4x3dm²=500m²+300m²=800m²