Question

HELP! RAPIDDDD
23, Calculaţi:
a) 112,5 m² +21,679 cm²+3,11 hm² =... m² =... cm² =... hm²;
b) 3,115 km² +0,11 mm² +2,125 dm² =... km² =... mm² = ... dm²;
c) 41,56 dam² +5,169 dm² +2,17 hm² =... dam2 =... dm² = hm²;
d) 125,49 cm² +2,134 mm² +17,52971 km² =... cm² =... mm² =... km²;
e) 1234791,006 mm2 +15132690 m² +3,4 km2 =... mm2 =... m² =... km²; f) 2,7 ha +3,29 ari + 1 km² =... ha... ari =... km². ​

Answer 1

Vom folosi scara unitatilor:

km

     hm

           dam

                   m

                       dm

                             cm

                                    mm

Calculam:

a)

112,5 m² +21,679 cm²+3,11 hm²=112,5 m²+0,0021679 m²+31100 m²=31212,5021679 m²=312125021,679 cm²=3,3,12125021679 hm²

b)

3,115 km² +0,11 mm² +2,125 dm² =3,115 km²+0,00000000000011 km²+0,00000002125 dm²=3,11500002125011 km²=311,500002125011 mm²=31150000,2125011 dm²

c)

41,56 dam² +5,169 dm² +2,17 hm²=41,56 dam²+0,005169 dam²+217 dam²=258,565169 dam²=2585651,69 dm²=2,58565169 hm²

d)

125,49 cm² +2,134 mm² +17,52971 km²=125,49 cm²+0,02134 cm²+175297100000 cm²=175297100125,5113 cm²=175297100125511,3 mm²=17,52971001255113 km²

e)

1234791,006 mm² +15132690 m² +3,4 km²=12347,91006 cm²+151326900000 cm²+34000000000 cm²=185326912347,9101 cm²=

18532691234791,01 mm²=18,53269123479101 km²

=18532691,23479101 m²

f)

1 ha=10 000 m²

1 km²=1000 000 m²

1 ar=100 m²

1 ha=100 ari

2,7 ha +3,29 ari + 1 km²=2,7 ha+0,0329 ha+100 ha=102,7329 ha=10273,29 ari=1,027329 km²

Un alt exercitiu cu unitati de masura gasesti aici: https://brainly.ro/tema/2585528

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