a. 9999.997 + 9999 + 9999 + 9999

= 9999.(997 + 1 + 1 + 1)

= 9999 . 1000

= 9999000

b. (456 . 11 + 912) . 37 : 13 : 74

= (5016 + 912) . 37 : 13 : 74

= 219336 : 13 : 74

= 16872 : 74

= 228

c. 864 . 48 - 432 . 96 : 864 . 48 . 432

=  (864 . 48 - 432 . 96) : (864 . 48 . 432)

= 0 : (864 . 48 . 432)

= 0

a. 9999.997 + 9999 + 9999 + 9999

= 9999.(997 + 1 + 1 + 1)

= 9999 . 1000

= 9999000

b. (456 . 11 + 912) . 37 : 13 : 74

= (5016 + 912) . 37 : 13 : 74

= 219336 : 13 : 74

= 16872 : 74

= 228

c. 864 . 48 - 432 . 96 : 864 . 48 . 432

=  (864 . 48 - 432 . 96) : (864 . 48 . 432)

= 0 : (864 . 48 . 432)

= 0

a)

\(\frac{864\cdot48-432\cdot96}{864\cdot48\cdot432}=\frac{432\cdot2\cdot48-432\cdot96}{864\cdot48\cdot432}=\frac{432\cdot96-432\cdot96}{864\cdot48\cdot432}=\frac{0}{864\cdot48\cdot432}=0\)

Làm từng phần một nha =))

b)

\(\frac{16\cdot17-5}{16\cdot16+11}=\frac{16\cdot\left(16+1\right)-5}{16\cdot16+11}=\frac{16^2+16-5}{16^2+11}=\frac{16^2+11}{16^2+11}=1\)

@_@

câu khó quá mmk ko làm đc

Ta có : 864.48-432.96 = 0

=> 864.48-432.96/864.48.432 = 0

8) ((456.11 + 912).37) : 13 . 74

= [(456.11 + 456 . 2).37] : 13 . 74

= [456.(11 + 2).37] : 13 . 74

= 456 . 13 . 37 : 13 . 74

= 456 . 37 : 74

= 456 : ( 74 : 37 )

= 456 : 2 

= 228

9) Ta có:

864 . 48 - 432 . 96 

= 432 . 2 . 48 - 432 . 96

= 432 . 96 - 432 . 96

= 432 . ( 96 - 96 )

= 432 . 0

= 0

\(\Rightarrow\left(864.48-432.96\right):864.48.432\)

\(=0:864.48.432\)

\(=0\)

\(8,\left[\left(456.11+912\right).37\right]:13.74\)

\(=\left[\left(5016+912\right).37\right]:13.74\)

\(=\left(5928.37\right):13.74\)

\(=219336:13.74\)

\(=16872.74\)

\(=1248528\)

\(9,\left(864.48-432.96\right):864.48.432\)

\(=\left(41472-41472\right):864.48.432\)

\(=0:864.48.432\)

\(=0\)

8)[(456.11+912).37]:13.74                                   9)(864.48-432.96):864.48.432

=[5928.37]:13.74                                                    =0:864.48.432

=219336:13.74                                                        =0

=16872.74

=1248528

                                       HỌC TỐT NHÉ

-953856

Trả lời:

864*48-432*96/864*48*432

HỌC TỐT!

Bằng -953856 nha

xin lỗi mình nhắn luôn

432 x 2 x 48 - 432 x 96

___________________

432 x 2 : 48 x 432

  432 x 96 - 432 x 96

= __________________

    432 : 24 x 432

  432 x ( 96 - 96 ) 

=______________

     432 : 24 x 432

           0

=_______________

   432 : 24 x 432

=0

a, (195 . 132 - 132 . 85) : 110

 \(=132\left(195-85\right):110\)   

 \(=132.110:110\)

 \(=132\)

b) 35 x 24 + 35 x 76 +55 x 19 +55 x 91

= 35 x ( 24 + 76 ) + 55 x ( 19 + 91 )

= 35 x100 +55 x 100

= 100 x ( 55 + 35 )

= 90 x 100 =9 000

c) \(6\cdot25\cdot4+4\cdot19\cdot6-2\cdot14\cdot12\)

\(=24\cdot25+24\cdot19-24\cdot14\)

\(=24\left(25+19-14\right)\)

\(=24\cdot30=720\)

d) \(19\cdot64+76\cdot34\)

\(=76\cdot19+76\cdot34\)

\(=76\left(19+34\right)=76\cdot53=4028\)

a) 2 x 16 x 50 x 25

= ( 2 x 50 ) x ( 16 x 25 )

= 100 x 400 

= 40 000

A = ( 456x11 +912 )x 34

   = 5928 x 34

   = 201552

B = 864 x 48 - 432 x 96

   = 41472 - 41472

   = 0

C = 628 : 423 : 3 -18 x 25

   = \(\frac{628}{1269}\)-  450

   = -449, 5051221

D = ( 18x42+459 : 9)x12-46

   = ( 756 + 51 ) x 12 - 46

   = 807 x 12 - 46

   = 9684 - 46

   = 9638

Hk tốt

lay may tinh ma tinh ban oi