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a) ( 2011 - 125 x 8 : 4 ) x ( ( 48 : 8 x 6 )
= ( 2011 - 1000 : 4 ) x ( 6 x 6 )
= ( 2011 - 250 ) x 36
= 1761 x 36
= 63396
b) B = Không hiểu
c) C =
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a) \(0,75\times26+49\times\frac{3}{4}+\frac{3}{4}\times24+\) \(0,75\)
\(=\) \(0,75\times\left(26+1\right)+\frac{3}{4}\times\left(49+24\right)\)
\(=\) \(\frac{3}{4}\times27+\frac{3}{4}\times73\)
\(=\) \(\frac{3}{4}\times\left(27+73\right)\)
\(=\)\(\frac{3}{4}\times100=75\)
b) câu b,c làm tương tự
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0,75 = \(\frac{3}{4}\)
\(\frac{4}{3}\) x 2011 x \(\frac{3}{4}\)
= \(\frac{4}{3}\) x \(\frac{3}{4}\) x 2011
= 1 x 2011
= 2011
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\(a)101\times0,75-0,75\)
\(=0,75\times(101-1)\)
\(=0,75\times100=75\)
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`b)10:0,5+4:0,25+8:0,125`
\(=10\times2+4\times4+8\times8\)
\(=5\times4+4\times4+4\times16\)
\(=4\times(5+4+16)\)
\(=4\times25=100\)
a)101×0,75−0,75
=0,75\times(101-1)=0,75×(101−1)
=0,75\times100=75=0,75×100=75
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b)10:0,5+4:0,25+8:0,125b)10:0,5+4:0,25+8:0,125
=10\times2+4\times4+8\times8=10×2+4×4+8×8
=5\times4+4\times4+4\times16=5×4+4×4+4×16
=4\times(5+4+16)=4×(5+4+16)
=4\times25=100=4×25=100
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0,75 x 95 + 1,5 x 2 +0,75
=0,75 x 95 + 0,75 x 2 x2 +0,75
=0,75 x 95 +0,75 x 4 +0,75
=0,75 x(95+4+1)
=0,75 x100
=75
653,6:0,125x5:8
=653,6x(5:0,125);8
=653,6x40:8
=653,6x(40:8)
=653,6 x 5
3260
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0,25 * 0,125 * 2011/2012 * 8 * 4 = ( 0,25 * 4 ) * ( 0,125 * 8 ) * 2011/2012 = 2011/2012
35×11×9×0,125×2011×(3÷4-0,75)
=35×11×9×0,125×2011×(0,75 - 0,75 )
= 35×11×9×0,125×2011x 0
=> = 0
(3÷4-0,75) =0
=> 35×11×9×0,125×2011×(3÷4-0,75)=0