Tính bằng cách hợp lí nhất:

\(\left(44.52.60\right)\div\left(11.13.15\right)\)

\(=\)\(\left(4.11.4.13.4.15\right)\div\left(11.13.15\right)\)

\(=\)\(\left(4.4.4\right).\left(11.13.15\right)\div\left(11.13.15\right)\)

\(=\)\(\left(4.4.4\right)\div1\)

\(=\)\(4.4.4\)

\(=\)\(64\)

Thanks nha

\(\frac{44.52.60}{11.13.15}\)

\(=\frac{2^2.11.2^2.13.2^2.15}{11.13.15}\)

\(=2^2.2^2.2^2=4^3=64\)

= 44.52.60 :11:13:15

=(44:11). (52:13). (60:15)

= 4.4.4

=64

a) (44 x 52 x 60) : (11 x 13 x 15) 

= 44 x 52 x 60 : 11 : 13 : 15

= (44 : 11) x (52 : 13) x (60 : 15)

= 4 x 4 x 4 

= 64

b) 2016 x 20152015 - 2015 x 20162016

= 2016 x (20150000 + 2015) - 2015 x (20160000 + 2016)

= 2016 x (2015 x 10000 + 2015) - 2015 x (2016 x 10000 + 2016)

= 2016 x [2015 x (10000 + 1)] - 2015 x [2016 x (10000 + 1)]

= 2016 x 2015 x 10001 - 2015 x 2016 x 10001

= 0

c) 46 x 37 + 46 x 63 + 54 x 267 - 54 x 167

= 46 x (37 + 63) + 54 x (267 - 167)

= 46 x 100 + 54 x 100

= 100 x (46 + 54)

= 100 x 100

= 10000 

bn k mik nha

mik giải ở tin nhắn rồi

nếu ko bị sao chép

(44x52x60):(11x13x15)

=(4x4x4):(1x1x1)

=64:1

=64

=( ( 44 : 11) x ( 52 : 13 ) x ( 60 : 15 ) )

= 4 x 4 x 4

= 64

a) (44 x 52 x 60) : (11 x 13 x 15)

= (44 : 11) x ( 52 : 13) x (60 : 15)

= 4 x 4 x 4 = 64

d) 1 + 6 + 11 + 16 + ... + 46 + 51

Ta có : 1 + 6 + 11 + 16 + ... + 46 + 51 ( có 11 số )

= (51 + 1) x 11 : 2 = 286

a, Ta thấy 44:11=4               ,         52;13=4        ,                60:15=4,                                                                                                                         => 4*4*4=64             

b,Ta có : 16*17-5=16*(16+1)-5=16*16+16-5=16*16+11    Ta thấy Cụm 1 = Cụm 2 => Đáp án =1

a,  44.52.60 

     11.13.15

= 4.4.4=64

thẳng hàng rút gọn VD: 44:11; 52:13.;;

a. (44.52.60) : (11×13×15)

= ( 44: 11).(52:13).(60:15)

= 4.4.4 =4³

b. 123.456456 - 456.123123

=123.456.1001-456.123.1001

=0

c. (98.7676-9898.76): (2001×2002×2003...2010)

=( 98.76.101-98.101.76): (2001×2002×2003...2010)

=0:  (2001×2002×2003...2010)

=0

"."  là nhân

a,\(\frac{1}{5}\times\frac{2}{9}\div\frac{1}{15}\)

\(=\frac{1}{5}\times\frac{2}{9}\times15\)

\(=\left(\frac{1}{5}\times15\right)\times\frac{2}{9}\)

\(=3\times\frac{2}{9}\)

\(=\frac{2}{3}\)

b\(\frac{4}{15}\times\frac{7}{15}\times\frac{5}{4}\)

\(=\left(\frac{4}{15}\times\frac{5}{4}\right)\times\frac{7}{15}\)

\(=\frac{1}{3}\times\frac{7}{15}\)

\(=\frac{7}{45}\)

c,\(\frac{21}{23}\times\frac{5}{11}\times\frac{44}{?}\)

d,\(26\times\frac{13}{42}\div13\)

\(=\left(26\div13\right)\times\frac{13}{42}\)

\(=2\times\frac{13}{42}\)

\(=\frac{13}{21}\)

ờ ờ .......................... hong bt

21/23 x 5/11x 44/35

a/ ( 11.4.13415.4):(11.13.15)
= (11.15.13:11.1315).4.4.4
=1.4.4.4
=64
b/(168.168-168,58):110
=168.(168-58);110
=168.110:110
=168
c/(27.45-27.55):(2+4+6+...+18)