( 456 x 11 + 912 ) x 37 : 13 x 74 = 1248528

ko được dùng máy tính đâu bạn

Ta có :

456x36+456x61+4 x456+456

=456x(36+61+4+456)

=456x...tự tính

=...tự tính

Umm mình tưởng là cái 456 đó tính là 1 thôi chứ nhỉ ban???

=228 ban nhe k di

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

456 x 36 + 456 x 61 + 4 x 456 - 456

= 456 x ( 36 + 61 + 4 - 1 )

= 456 x 100

= 45600

Nhớ tích cho mk nha

456x36+456x61+4x456-456

=456x(36+61+4-1)

=456x100

=45600

(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

(456x111+912)x37:13.74=(50616+912)x37:13.74=51528x37:13.74=1906536:13.74=138758.0786

(456x11+912)x37:13x74

= (5016+912)x37:13x74

=     5928      x37:13x74

=         219336    :13x74

=           16872         x74

=               1248528.

K nhé

\(\left(456\times11+912\right)\times37:13\times74\)

\(=\left(5016+912\right)\times37:13\times74\)

\(=5928\times37:13\times74\)

\(=219336:13\times74\)

\(=16872\times74\)

\(=1248528\)

`@` `\text {Ans}`

`\downarrow`

`456 \div2\times18 + 456\div3 - 102`

`= 456\times0,5\times18 + 456\times1/3 - 102`

`= 456\times (0,5 \times 18 + 1/3) - 102`

`= 456 \times(9 + 1/3) - 102`

`= 456 \times28/3 - 102`

`= 4256 - 102`

`= 4154`

=456*9+456:3-102

=4104+152-102

=4104+40

=4144

a) \(\left(42\times43+43\times57+43\right)-360:4\)

\(=43\times\left(42+57+1\right)-90\)

\(=43\times100-90\)

\(=4300-90\)

\(=4210\)

b) \(\left(372-19\times4\right)+\left(981:9-13\right)\)

\(=\left(4\times93-19\times4\right)+\left(109-13\right)\)

\(=4\times\left(93-19\right)+109-13\)

\(=4\times74+109-13\)

\(=296+109-13\)

\(=392\)

c) \(456:2\times18+456:3-102\)

\(=456\times\frac{1}{2}\times18+456\times\frac{1}{3}-102\)

\(=456\times\left(\frac{1}{2}\times18+\frac{1}{3}\right)-102\)

\(=456\times\left(9+\frac{1}{3}\right)-102\)

\(=456\times\frac{28}{3}-102\)

\(=4256-102\)

\(=4154\)

ko bk tính nhanh!

a)( 42 x 43 + 57+43 ) - 360 :4                                                 b) (372 - 19 x 4 ) + ( 981 : 9 - 13 )

  = 43 x (42 + 57 +1 ) - 90                                                       = (372 - 76 )  + ( 109 - 13) 

  = 43 x 100 - 90                                                                     = 296 + 96   

  = 4300 - 90                                                                          = 392   

  = 4210

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