\(35.12+65.13\)

\(=420+845\)

\(=1265\)

\(35\cdot12+65\cdot13\)

\(=35\cdot12+65\left(12+1\right)\)

\(=35\cdot12+65\cdot12+65\)

\(=\left(65+35\right)\cdot12+65\)

\(=100\cdot12+65\)

\(=1200+65\)

\(=1265\)

35.12 + 65.13 = 35.12 + 65.12 + 65 

                     = 12(35+65) + 65

                    = 12.100 +65

                  = 1265

35.12+65.13

=420+845

=1265

      35.12+65.13

=35.12+65.(12+1)

=35.12+65.12+6

=(35+65).12+65

=100.12+65

=1200+65

=1265

35.12+65.13

=420+845

=1265

1265 **** cho mình với nhé 

35.12+65.13

=35.12+65.12+65

=(35+65).12+65

=100.12+65

=1200+65

=1265

minh cung vay

485;1800

35*12+65*13=420+845=1265

53*39+39*47-53*21-47*21=1800

= 35.12 + 65.12 + 65

= 12.(35 + 65) + 65

= 12. 100 + 65

= 1200 + 65

= 1265

  tick đúng nhé !

=(35+65).(12+13)

=100.25

=2500

Bài làm :

\(35.12+65.13\)

\(=35.12+65.\left(12+1\right)\)

\(=35.12+65.12+65\)

\(=\left(35+65\right).12+65\)

\(=100.12+65\)

\(=1200+65\)

\(=1265\)

Học tốt

19x64+76x34=43928

35*12+65x13=6305

giải thich cách làm ra đi bạn

35.12+65.13

=(35+65).(12+13)

=100.25

=2500

k mình nha

 35 . 12 + 65 . 13

= 35 . 12 + 65 . ( 12 + 1 )

= 35 . 12 + 65 . 12 + 65 . 1

= 35 . 12 + 65 . 12 + 65

= 12 ( 65 + 35 ) + 65

= 12 . 100 + 65

= 1200 + 65

= 1265

minh nham:

35.12+65.13

=12.(35+65)+65

=12.100+65

=1200+65

=1265