A = ( 0,75 + \(\frac{13}{4}\) ) x ( \(\frac{2}{10}\) x 0,01 + 0,03 )

A = ( 0,75 + 3,25 ) x ( 0,2 x 0,01 + 0,03 )

A = 4 x 0,032

A = 0,128

\(A=4.16\)

{3.265+2.735}+{4.572++1.428}

6+6=12 

a) 3.265 + 4.572 + 2.735 + 1.428

 = (3.265 + 2.735) + (4.572 + 1. 428)
 =           6           +          6

 =                      12

=24.77+24.27-27.1

=27.(74+24-1)

=27.100

=2700

hom nay bn  nợ tôi 1 tick đấy nhé -_-
 

lam nhanh va day du moi tick

27.( 77+27+1)
27.100

2700

98,54 - 41,82 - 35,72

=98,54 - (41,82 + 35,72)

=98,54 - 77,54

=21

 98,54 - 41,82 - 35,72 

= 56,72 - 35,72

= 21 

98,54 - ( 41,82+35,72)

98,54 - 98,54

0

(7.5 x 18.3 + 26.4 x 18.3)x(47x11-47x100x0.1-47)

=(7.5x18.3+26.4x18.3)x(47x11-47x10-47)

=(7.5x18.3+26.4x18.3)x47x(11-10-1)

=(7.5x18.3+26.4x18.3)x47x0

=(7.5x18.3+26.3x18.3)x0

=0

Cac ban giup Minh nha.

6954 + 7123 + 9816 - ( 816 - 123 - 954 )

Dang tính nhanh nhe

\(a,\dfrac{5}{9}\times\dfrac{5}{2}+\dfrac{4}{9}\times\dfrac{5}{2}=\dfrac{5}{2}\times\left(\dfrac{5}{9}+\dfrac{4}{9}\right)=\dfrac{5}{2}\times1=\dfrac{5}{2}\)

\(12\times\dfrac{3}{4}-\dfrac{3}{4}\times\dfrac{12}{7}=\dfrac{3}{4}\times\left(12-\dfrac{12}{7}\right)=\dfrac{3}{4}\times\dfrac{72}{7}=\dfrac{54}{7}\)