Mấy con khác bạn làm đúng nha

81998 km=819980 dm

77 m=770 dm

5 hm 63 m=5,63 hm

44,3 dm=443 cm

272 cm=0,272 dam

15x3+15x4+15

=15x(3+4+1)

=15x8

=120

 Hạnh phúc,mừng

1)AlOH

2)Fe(SO₄)₂

3)CaO

4)AlCl

5)NaPO₄

6)ZnCl

a.12,02

b.209,306

2.There is too much sugar in my tea

3.We haven't got enough glasses

4.There aren't enough plates for dinner

5. There are too many crisps for two people.

6. I've got too many chips with my burger.

a.2 km 586 m

b.2,064 tấn

c.57 km 37 m

d.13,07 tạ

1.C

2.A

3.B

4.D

5.B

6.D

7\(\dfrac{9}{12}\)