Question

Giai nhanh va dung giup e nhe :

Ap dung cac tinh chat cua phep cong va phep nhan de tinh nhanh :

  c)  25 . 5 . 4 . 27 . 2

Answer 1

25 x 5 x 4 x 27 x 2

= ( 25 x 4 ) x ( 5 x 2 ) x 27

= 100 x 10 x 27 

= 1000 x 27

= 27000

Answer 2

25 . 5 . 4 . 27 . 2 = ( 25 . 4 ) . ( 5 . 2 ) . 27 = 100 . 10 . 27 = 1000 . 27 = 27000    

Answer 3

25x5x4x27x2

=(25x4)x(5x2)x27

=100x10x27

=27000

Answer 4

c) 25 . 5 . 4 . 27 . 2 =

(25 . 4) . (5 . 2) . 27 = 

100 . 10 . 27 = 27 000

Answer 5

25.5.4.27.2=25.4.5.2.27=100.10.27=27000

Answer 6

c) 25 . 5 . 4 . 27 . 2 =

(25 . 4) . (5 . 2) . 27 = 

100 . 10 . 27 = 27 000

Answer 7

c/ 25.5.4.27.2

= (25.4.(5.2).27

= 100.10.27

=27 000

Answer 8

25.5.4.27.2

=(25.4).(5.2).27

=100.10.27

=1000.27

=27000

Answer 9

= 27 000

~ Chúc bn hok tốt ~

..........................

Answer 10

25.5.4.27.2

=(25.4).(5.2).27

=100.10.27

1000.27

=27000