Tính :
( 456 x 11 + 912 ) x 37 : 13 : 74
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Tính :
( 456 x 11 + 912 ) x 37 : 13 : 74
= ( 456 x 11 + 456 x 2 ) x 37 : 13 : 74
= 456 x ( 11 + 2 ) x 37 : 13 : 74
= 456 x 13 x 37 : 13 : 37 x 2
= 23 x 3 x 19 x 13 x 37 : 13 : 37 x 2
= 8 x 3 x 19 x 37 : 37 x 2
= 4 x 3 x 19
= 228
Mk làm như vầy Không biết đã đúng hay chưa ? Mong các bạn giúp
(456x11+912)x37:13x74
= (5016+912)x37:13x74
= 5928 x37:13x74
= 219336 :13x74
= 16872 x74
= 1248528.
K nhé
\(\left(456\times11+912\right)\times37:13\times74\)
\(=\left(5016+912\right)\times37:13\times74\)
\(=5928\times37:13\times74\)
\(=219336:13\times74\)
\(=16872\times74\)
\(=1248528\)
Ta có: \(B=\left(45\cdot1+912\right)\cdot37:\left(13\cdot74\right)\)
\(=\dfrac{37\left(45\cdot1+912\right)}{13\cdot74}\)
\(=\dfrac{45+912}{13\cdot2}\)
\(=\dfrac{957}{26}\)
( 456 x 11 + 912 ) x 37 : 13 x 74
= ( 5 016 + 912 ) x 37 : 13 x 74
= 5 928 x 37 : 13 x 74
= 219 336 : 13 x 74
= 16 872 x 74
= 1 248 528
\(\frac{\left(456.11+912\right).37}{13.74}=\frac{\left(456.11+912\right).37}{13.37.2}=\frac{\left(456.11+456.2\right).37}{13.37.2}=\frac{456.\left(11+2\right).37}{13.37.2}\)
= \(\frac{456.13.37}{13.37.2}=\frac{456}{2}=228\)
2010 x 2010 - 2009 x 2011
= ( 2011 - 2010 ) x 2010 - 2009 x 2011
= 2011 x 2010 - 1 x 2010 - 2009 x 2011
= 2011 x ( 2010 - 2009 ) - 1 x 2010
= 2011 x 1 - 2010
= 2011 - 2010
= 1
( 456 x 11 + 912 ) x 37 : ( 13 x 74 )
= ( 456 x 11 + 456 x 2 ) x 37 : ( 13 x 74 )
= [ 456 x ( 11 + 2 ) ] x 37 : ( 13 x 74 )
= [ 456 x 13 ] x 37 : ( 13 x 74 )
= 13 x 456 x 37 : ( 13 x 37 x 2 )
= 13 x 37 x 2 x 228 : ( 13 x 37 x 2 )
= ( 13 x 37 x 2 ) x 228 : ( 13 x 37 x 2 )
= ( 13 x 37 x 2 ) : ( 13 x 37 x 2 ) x 228
= 1 x 228
= 228
(44 x 52 x 60) : (11 x13 x 15 )
= [ ( 4 x 11 ) x ( 4 x 13 ) x ( 4 x 15 ) ] : (11 x13 x 15 )
= [ 4 x 11 x 4 x 13 x 4 x 15 ] : (11 x13 x 15 )
= [ ( 4 x 4 x 4 ) x ( 11 x 13 x 15 ) ] : (11 x13 x 15 )
= 64 x (11 x13 x 15 ) : (11 x13 x 15 )
= 64 x 1
= 64
a) 2010 x 2010 - 2009 x 2011
= 2010 x 2010 - [ 2009 x ( 2010 +1) ]
=2010 x 2010 - 2009 x 2010 - 2009
=2010( 2010 - 2009 ) -2009
= 2010 -2019
= 1
c) ( 44 x 52 x60 ) : (11x13x15)
\(\frac{44\cdot52\cdot60}{11\cdot13\cdot15}=\frac{4\cdot11\cdot4\cdot13\cdot4\cdot15}{11\cdot13\cdot15}=64\)
B) (456 x 11 +912) x 37 : ( 13 x 74 )
= \(\frac{\left(456\cdot11+912\right)\cdot37}{13\cdot74}=\frac{\left[456\left(11+2\right)\right]\cdot37}{13\cdot37}=\frac{456\cdot13}{13\cdot2}=\frac{456}{2}=228\)
Nhớ k mik nha bn
a) A= ( 5016+912).37:13:74
A= 5928.37:13:74
A=219336:13:74
A=16872:7
A=228
b) B=[687.3+687.7]:(338+1036)
B=687.(3+7):1374
B=687.10:1374
B=6870:1374
B=5
=(5016+912). 37 : 13 : 74
=5928.37 : 13 : 74
=219336 : 13 : 74
=16872:74
=2410
(456.11+912).37:13:74
= (456.11+912):13:(74:37)
= (456.11+456.2):13:2
= 456.(11+2):13:2
= 456.13:13:2
= (456:2).(13:13)
= 228.1
= 228
(456x11+912)x37:13:74
=(5016+912)x37:13:74
=5928x37:13:74
=219336:13:74
=16872:74
=228
(456x11+912)x37:13:74=(5016+912)x37:13:74=5928x37:13:74=219336:13:74=228