(25 x 4 ) x (35 x 6 ) = 100 x 210 = 21000

25 x 35 x 4 x 6 

= (25 x 4 ) x ( 35 x 6 ) 

= 100 x 210

= 21 000 

25x35x4x6

=(25x4) x (35x6)

=100x210

=21000

\(25\times35\times4\times6\)

\(=\left(25\times4\right)\times\left(35\times6\right)\)

\(=100\times210\)

\(=21000\)

\(25\times35\times4\times6\)

\(=\left(25\times4\right)\times\left(35\times6\right)\)

\(=100\times210\)

\(=21000\)

\(~HT~\)

=25 x 4 x (35 x 6)

=100 x 210

=21000

\(\frac{37}{35}:\frac{5}{4}:\frac{74}{25}\)

\(=\frac{37}{35}:\left(\frac{5}{4}\times\frac{74}{25}\right)\)

\(=\frac{37}{35}:\frac{37}{10}\)

\(=\frac{2}{7}\)

\(\frac{37}{35}:\frac{5}{4}:\frac{74}{25}\)

=\(\frac{37}{35}x\frac{4}{5}x\frac{25}{74}\)

\(=\left(\frac{37}{35}x\frac{25}{74}\right)x\frac{4}{5}\)

\(=\frac{1}{7}x\frac{5}{2}x\frac{4}{5}\)

\(=\frac{1x5x2x2}{7x2x5}\)

\(=\frac{2}{7}\)

\(\frac{37}{35}:\frac{5}{4}:\frac{74}{25}\)

\(=\frac{37}{35}:\frac{74}{25}:\frac{5}{4}\)

\(=\frac{37}{35}\times\frac{25}{74}\times\frac{4}{5}\)

\(=\frac{37\times25\times4}{35\times74\times5}\)

\(=\frac{37\times5\times5\times2\times2}{5\times7\times37\times2\times5}\)

\(=\frac{2}{7}\)

~ Thiên Mã ~

= ( 7.11 ) . ( 4.25 )

= 77 . 100

= 7700

4 . 7 . 11 . 25

=(25.4)(11.7)

=100.77

=7700

4 . 7 . 11  . 25 = ( 4 . 25 ) . ( 7 . 11 ) = 100  . 77 = 7700 

ai k tớ 

tớ k lại 

^_^ hihih

=(134x35)-35x12-11x70

=4690-420-770

=4270-770

=3500

= 3500 nhé

Con nhà mình làm thế này bị cô giáo chấm là chưa thuận tiện là sao ạ

\(=25\%+25\%\times38+25\%\times50+25\%\times11\)

\(=25\%\times\left(1+38+50+11\right)=25\%\times100=25\)

\(\dfrac{25}{100}+\dfrac{1}{4}\times38+25\%\times50+0,25\times11\)

\(0,25+0,25\times38+0,25\times50+0,25\times11+1\)

\(0,25\times\left(38+50+11+1\right)\)

\(0,25\times100\)

\(25\)

a) 19,17x25x4=19,17(25x4)=19,17x100=1917

b)1,79x(8x125)=1,79x1000=1790

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