Bài giải

36m2=6x6

Vậy cạnh của hình vuông đó là 6m.

Chu vi mảnh vườn là:

                 6x4=24(m)

                       Đáp số: 24 m.

 dap so 24 

cho minh mot

=325x(79+21)
=325x100
=32500

TL

a) 325 × 79 + 325 × 21

 = 325 × (79 + 21)

 = 325 × 100

_HT_

 = 32500

1.
=(25x4)x(96x2)
=100x192=19200
2.
=155x(42+58)
=155x100=1500
3.
=35x(461+539)
=35x1000=35000
4
=196x(73+27)
=196x100=19600

1. =(25x4)x(96x2) =100x192 = 19200
2. =155x(42+58) = 155x100 = 15500
3. =35x(461+539) = 35x100 = 35000
4. =196x(73+27)=196x100=19600

  52 + 52 x 6,4 + 2,6 x 52

=52 + 52 x (6,4 + 2,6)

= 52 + 52 x    9

= 52 x 1 + 52 x 9

= 52 x ( 9 +1)

= 52 x    10

=      520

\(10=2.5\)

\(12=2^2.3\)

\(BCNN\left(10;12\right)=2^2.5.3=60\)

\(BCNN\left(10;12\right)=60\)

@Nghệ Mạt

#cua

rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh                     à

a)  \(\frac{4}{5}+\frac{2}{3}-\frac{5}{6}\)

\(=\frac{22}{15}-\frac{5}{6}\)

\(=\frac{19}{30}\)

b)  \(\frac{5}{9}\div\frac{3}{7}-\frac{16}{27}\)

\(=\frac{35}{27}-\frac{16}{27}\)

\(=\frac{19}{27}\)