Question

Tính nhanh :

12 x 34 + 6 x 2 x 54 + 3 x 4 x 12

 

 

Answer 1

   12 x 34 + 6 x 2 x 54 + 3 x 4 x 12

= 12 x 34 + 12 x 54 + 12 x 12

= 12 x ( 34 + 54 + 12 )

= 12 x 100

= 1200

Answer 2

12x34+6x2x54+3x4x12

=12x34+12x54+12x12

=12x(34+54+12)

=12x100

=1200

Answer 3

12 x 34 + 6 x 2 x 54 + 3 x 4 x 12

= 12 x 34 + 12 x 54 + 12 x 12

= 12 x (34 + 54 + 12)

= 12 x 100

= 1200

Answer 4

12 x 34 + 6 x 2 x 54 + 3 x 4 x 12

=> 12 x 34 + 12 x 54 + 12 x 12

=> 12 x ( 34 + 54 + 12 )

=> 12 x 100

=> 1200

Answer 5

12 x 34 + 6 x 2 x 54 + 3 x 4 x 12

= 12 x 34 + 12 x 54 + 12 x 12

= 12 x ( 34 + 54 + 12 )

=  12 x 100

= 1200

Answer 6

12.34+6.2.54+3.4.12=12.34+12.54+12.12=12.(34+54+12)=12.100=1200K mình nhe 

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Answer 7

Nguyễn Thanh Hương

12 x 34 + 6 x 2 x 54 + 3 x 4 x 12

= 12 x 34 + 12 x 54 + 12 x 12

= 12 x ﴾ 34 + 54 + 12 ﴿

= 12 x 100

= 1200

Answer 8

đs : 1200 nha!

chúc bạn hc giỏi !!!!!

Answer 9

12.34+6.2.54+3.4.12=12.34+12.54+12.12=12.(34+54+12)=12.100=1200K mình nhe