tính bằng cách thuận tiện nhất :

100 x 55 + 100 x 45 x 10

= 100 x 55 + 100 x 45 x 10

= 100 x 55 + 100 x 450

= 100 x ( 55 + 450 )

= 100 x 500

= 50000

100x55+100x45x100

=100x(55+45)x10

=100x100x10

=1000x10

=10000

       Các bn k mik nha

100*55+100*45*10

=(100*55)+(100*45)*10

=(5500+4500)*10

=10000*10

=100000

   11,5 x 0,01 + 55,2 : 100 + 1/100 x 33,3

=     0,115      +    0,552     +    0,333

=                             1

mong bạn tick cho mik

11,5 x 0,01 + 55,2 : 100 + 1/100 x 33,3

=11,5 x 0,01 + 55,2 x 0,01 + 0,01 x 33,3

=0,01 x ( 11,5 + 55,2 + 33,3 )

= 0,01 x 100

= 1

10 x 45 - 25 x 10

= 10 x ( 45 - 25 )

= 10 x 20

= 200

100 x 2 + 100 x 3 

= 100 x ( 2 + 3 )

= 100 x 5

= 500

10 x 45 - 25 x 10 

= 10 x [45 - 25]

= 10 x 20

= 200

100 x 2  + 100 x 3

= 100 x [2 + 3]

= 100 x 5

= 500

\(10.45-25.10=10\left(45-25\right)=10.20=200\)

\(100.2+100.3=100.\left(2+3\right)=100.5=500\)

\(=2003\times\left(58+52-10\right)+335\times100\)

\(=100\times\left(2003+335\right)=233800\)

(2003 x 58 + 52 x 2003 - 10 x 2003) + (670-335) x 100

= 2003 x ( 58 + 52 - 10 ) + 335 x 100

= 2003 x 100 + 335 x 100

= ( 2003 + 335 ) x 100

= 2338 x 100

233 800

12 43 x 100,11 - 12,43 : 100 - 12,43 : 10  

12.43 x ( 100.11 : 100 : 10 )

12.43 x 0.10011

1.2443673

12,43 x 100,11 - 12,43 : 100 - 12,43 : 10

= 12,43 x 100,11 - 12,43 x 0,01 - 12,43 x 0,1

= 12,43 x (100,11 - 0,01 - 0,1) 

= 12,43 x 100

= 1243

b: =(4,5+5,4)x0,01

=9,9x0,01

=0,099

bằng 0 

2021 x 31 + 17 x 2021 + 47 x 2021 - 100 x 2021 + 5 x 2021 

= 2021 x ( 31 + 17 +47 + 5 - 100 )

=  2021 x 0 

=  0 .

         N H Ớ    T I C K    C H O    TUI   NHA    !

                   ~ HT~

= 0 nha

=7/10(3+5+2)

=7/10*10

=7

3 x 7/10 + 7/10 x 5 + 2 x 7/10

= 7/10 x (3 + 5 + 2)

= 7/10 x 10

= 7

\(3\times\dfrac{7}{10}+\dfrac{7}{10}\times5+2\times\dfrac{7}{10}\)

\(=\dfrac{7}{10}\times\left(3+5+2\right)\)

\(=\dfrac{7}{10}\times10\)

\(=7\)