Question

Plz raspunsurile
$7$
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Answer 1

a) 0,0253 hm=2,53 m

5 dam 50 m

340 cm 3,4 m

890 mm = 0,890 m (=0,89 m)

2,53 m+50 m+3,4 m+0,89 m= 56,82 m

b) 560 cm²+0,025 m²+47690 mm²=560*10-⁴ m²+25*10-³m²+47690*10-⁶=0,12869 m²

c) 1L = 1 dm³ = 0,001 m³

2 L = 2 dm³

0,010 m³ = 10 dm³

2 dm³ + 12 dm³ + 10 dm³ = 24 dm³ = 0,024 m³= 24 litri

d) 1230,34dl.

e) 2h 30 min 45 sec

-1h 45 min 55 sec

1h=60 minute

1 min=60 sec

2h 30 min 45 sec => 1h (2-1) 89 min (30 + 60-1) 105 sec (60 +45)

putem scrie astfel:

1h 89 min 105 sec

1 h 45 mn 55 sec

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44 min 50 sec