Question

tính nhanh

20,23 x 15 , 75 + 20,23 x 85,25 - 20,23

0,66 + 1,2 + 3 ,34 + 2,8

giúp mình ạ

Answer 1

a: =20,23(15,75+85,25-1)

=20,23*100

=2023

b: =0,66+3,34+2,8+1,2

=4+4

=8

Answer 2

20,23 x 15,75 + 20,23 x 85,25 - 20,23

=2023 x (15,75+85,25-1)

= 2023 x 100

=202300

 

0,66 + 1,2 + 3,34 + 2,8

=(0,66+3,34)+(1,2+2,8)

=4+4

=8