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Ut Phamthi

Tính bằng cách thuận tiện 

12,5 x 2,3 x 1,1 x 0,8

_Py_(1m4)_Lùn_Sập_nghiệp...
7 tháng 3 2019 lúc 11:50

12,5 * 2.3 * 1,1 * 0,8

= (12,5 * 0,8) *  ( 2,3 * 1,3)

= 10 * 2,99

= 29,0

Vương Hải Nam
7 tháng 3 2019 lúc 11:56

12,5 x 2,3 x 1,1 x 0,8

(12,5 x 0,8) x (1,1 x 2,3)

10 x 2,53

25,3

Nguyên Tiến Minh
7 tháng 3 2019 lúc 12:00

ta có:

12,5*2,3*1,1*0,8

=(12,5*0,8)*(2,3*1,1) 

=10*2,53

=25,3

Lê Mỹ Lê
7 tháng 3 2019 lúc 12:06

12,5 x 2,3 x 1,1 x 0,8

=( 12,5 x 0,8 ) x ( 1,1 x 2,3)

= 10 x 2,53

= 25,3

Chúc bạn học tốt

Lê Đình Tuấn Kiệt
25 tháng 2 2023 lúc 9:31

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