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/'mkjnhgghjchtdx((=+&-*/Jyfjtyfjytfjyfcjytfytjffgfyfyfhy*&+*&+*+*/*&+*;+/+&-&-&*&:/):

Đfdyfjyffjyjyfkyffkyffy

248 943 294

3 phút 20 giây = 200 giây

1 dm² 54 cm² > 145 cm²

105 dm² < 1 m² 50 dm²

1 thế kỉ < 1 000 năm

a)5,50 000

b)1 100 000