Question

Tính nhanh

a:2.31.12+4.6.42+8.27.3

b:36.28+36.82+64.69+64.41

Answer 1

a ) = 24 . 31 + 24.42 + 24.27

= 24 . ( 31+42+27)

=24.100

= 2400

b) = 36.( 28+82) + 64.( 69+41)

= 36.101 + 64.101

=101.( 36+64)

=101.100

=10100

Answer 2

sai rồi kết quả là 11000 chứ

Answer 3

A) 2.31.12+4.6.42+8.27.3

=( 2.12 )+31.( 4.6 )+42. ( 8.3)+27

=24 . (31 + 42  +27 )

=24 . ( 73 + 27)

= 24 . 100

= 2400

B ) 36 . 28 + 36.82+64. 69+64 . 41

= 36 . ( 28 + 82 )+ 64 . ( 69 + 41 )

= 36 . 110+64.110

=110 . (36 + 64 )

= 110 . 100

= 11000