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\(\left(366+434\right)\times\frac{1009}{500}+\frac{1009}{500}\times199+\frac{1009}{500}\)
\(=800\times\frac{1009}{500}+\frac{1009}{500}\times199+\frac{1009}{500}\)
\(=\left(800+199+1\right)\times\frac{1009}{500}\)
\(=1000\times\frac{1009}{500}\)
\(=2018\)
~ Thiên Mã ~
\(\left(366+434\right)\times\frac{1009}{500}+\frac{1009}{500}\times199+\frac{1009}{500}\)
\(=800\times\frac{1009}{500}+\frac{1009}{500}\times199+\frac{1009}{500}\times1\)
\(=\left(800+199+1\right)\times\frac{1009}{500}\)
\(=1000\times\frac{1009}{500}\)
\(=\frac{1009000}{500}=2018\)
a,234.4+234.5+234=234(4+5+1)=234.10=2340
b,135.16-135.2-135.4=135(16-4-2)=135.10=1350
c,1/2+1/4+1/8+1/16+1/32+1/64=1-1/2+1/2-1/4+1/4-1/8+1/8-1/16+1/16-1/32=1-1/32=31/32
a) 234 x4 + 234 x 5 + 234 = 234 x ( 1+4+5)=2340
b)135 x16 -135 x2 -4 x135 =135 x (16-2-4) =1350
a) 15/3 x 7/5 + 7/5 x 10/3 + 7/5
= (15/3 + 10/3 + 1) x 7/5
= 28/3 x 7/5
= 196/15
c) 2009 + 3567 + 6433 - 1009
= (2009 - 1009 ) + (3567 + 6433)
= 1000 + 10000
= 11000
\(\frac{15}{3}\)x\(\frac{7}{5}+\frac{7}{5}\)x\(\frac{10}{3}+\frac{7}{5}\)
= \(\frac{15}{3}\)x \(\frac{7}{5}+\frac{7}{5}\)x \(\frac{10}{3}+\frac{7}{5}x1\)
=\(\left(\frac{15}{3}+\frac{10}{3}+1\right)\)x \(\frac{7}{5}\)
= \(\frac{100}{3}\)x \(\frac{7}{5}\)
=\(\frac{140}{3}\)
\(\frac{1212}{1717}\)x \(\frac{165165}{132132}\)x\(\frac{515151}{515151}\)
= \(\frac{12}{17}\)x \(\frac{165}{132}\)x \(\frac{51}{51}\)
= \(\frac{12}{17}\)x\(\frac{165}{132}\)x 1
= \(\frac{165}{187}\)
2009 + 3567 + 6433 - 1009
= ( 2009 - 1009 ) + (3567 +6433 )
=1000 + 10000
= 11000
a) 54 x 2009 + 45 x 2009 + 2009
= 54 x 2009 + 45 x 2009 + 2009 x 1
= 2009 x ( 54 + 45 + 1)
= 2009 x 100
= 200900
b) 117 x ( 83 + 17 ) - 17 x ( 17 + 83)
= 117 x 100 - 17 x 100
= 100 x ( 117 - 17 )
= 100 x 100
= 10000
c) 997 x 4 + 997 x 6
= 997 x ( 6 + 4 )
= 997 x 10
= 9970
_HT_
2009.11-2000-9
=2009.11-(200+9)
=2009.11-2009
=2009.(11-1)
=2009.10
=20090
tik mik nha!!!
2009.11-2000-9
=2009.11-(200+9)
=2009.11-2009
=2009.(11-1)
=2009.10
=20090
a) \(437\times136-437\times125\)
\(=437\times\left(136-125\right)\)
\(=437\times11\)
\(=4807\)
b) \(2009\times71+29\times2009\)
\(=2009\times\left(71+29\right)\)
\(=2009\times100\)
\(=200900\)
a) 437 x 136 - 437 x 125
= 437 x (136 - 125 )
= 437 x 11
= 4807
b) 2009 x 71 + 29 x 2009
= 2009 x ( 71 + 29 )
= 2009 x 100
= 200900
a) x= 0.2 = 1/5
b) x=2
a) 2009 : x -1009 : x = 5000
(2009 -1009) : x = 5000
1000 : x = 5000
x = 1/5.
b) 234 * x + 766 * x = 2000
( 234 + 766 ) * x = 2000
1000 * x = 2000
x = 2