= 232x 98 -123 x 98

= 98 x ( 232 - 123)

=98 x 109

=10682 Hình như sai đề bài à

= 232 x 98 - 123 x 98

= 98 x ( 132 - 123 )

= 98 x 109

= 10682

~~~~hok tốt~~~~

232 x ( 36 + 62 ) - 123 x ( 62 + 36 )

232 x 98 - 123 x 98

98 x ( 232 - 123 )

98 x 109

10682

Mình nghĩ thế ! Sai thì đừng k sai cho mình nhé !

A=0

B=1780

Bạn nói rõ câu b đi vũ khắc thịnh

408+4+1368=412+1368=7180

nhớ cho mình nhé

a, = 113 x (54+45+1) = 113 x 100 = 11300

b, = (36+62) x (117-17) = 98 x 100 = 9800

k mk nha

11300

9800

h cho mk nha

a) 113 x (54+45+1)=113 x 100=11300

b) (36+62) x (117-17)=98 x 100=9800

117x(36+62)-17x(62+36)=10800

k nha

= ( 62 + 36 ) x ( 117 - 17 )

= 98 x 100

= 9800

= (36 + 62) x (117 - 17)

= 98 x 100 = 9800

 = 117 x 100 - 17 x 100

= ( 117 - 17 ) x 100

= 100 x 100

= 10000

117 x 100 - 17 x 100

=(117 - 17) x 100

= 100 x 100

= 10 000

a, ( 532 x 7 - 266 x 14 ) x ( 532 x 7 + 266 ) 

= 3724 - 3714 x 3724 + 266

= 0 x 3990

= 0

b, 117 x ( 36 + 62 ) - 17 x ( 62 + 36 )

= 117 x 98 - 17 x 98 

= 11466 - 1666

= 9800

c, ( 145 x 99 + 145 ) - ( 143 x 101 -143 )

= 14500  - 14300

= 200 

`@` `\text {Ans}`

`\downarrow`

`A,`

`248 \times (36 + 62) - 148 \times (62 + 36)`

`= (36+62) \times (248 - 148)`

`= 98 \times 100`

`= 9800`

`B,`

`107 \times 195 + 107 \times 175 - 107 \times 150`

`= 107 \times (195 + 175 - 150)`

`= 107 \times 220`

`= 23540`

`C,`

`(2020 \times 99 + 2020) - (2019 \times 101 - 2019)`

`= 2020 \times (99+1) - 2019 \times (101-1)`

`= 2020 \times 100 - 2019 \times 100`

`= 100 \times (2020 - 2019)`

`= 100 \times 1`

`= 100`

A. 248x(36+62)-148x(62+36)

=(36+62)x(248-148)

=98x100

=9800

B.107x195+107x175-107x150

=107x(195+175-150)

=107x220

=23540

C.(2020x99+2020)-(2019x101-2019)

=(2020x(99+1))-(2019x(101-1))

=(2020x100)-(2019x100)

=202000-201900

=100

(145*99+145)-(143*101-143)

giup minh voi

a) 54x113+45x113+113                                          b)117x(36+62) -17x(62+36)
   =(54+45+1)x113                                                    =117x98-17x98
   = 100x113                                                            =(117-17)x98
   = 11300                                                                =100x98
                                                                               =9800

a,54 x 113 + 45 x 113 + 113

=(54 + 45 +1) x 113

=100 x 113 = 11300

a) 113*( 54+45+1 ) = 113* 100=11300

b) 117*98-17*98=98*( 117-17 ) = 98*100=9800

a) = 117 x 100 - 17 x 100

= ( 117 - 17 ) x 100

= 100 x 100

= 10000

b) ( 532 x 7 - 266 x 14 ) x ( 532 x 7 + 266 )

=  532 x 7 - 266 x ( 2 x 7 ) x 3990

= 532 x 7 - 266 x 2 x 7 x 3990

= (532 x 7 - 532 x 7) x 3990

= 0 x 3990

= 0

c) 506 x 5 + 1012 + 253 x 6

= 506 x 5 + (506 x 2) + 253 x ( 2 x 3 )

= 506 x 5 + 506 x 2 + 253 x 2 x 3

= 506 x 5 + 506 x 2 + 506 x 3

= 506 x ( 5 + 2 + 3 )

= 506 x 10

= 5060

đúng rồi cho thôi

a ) 117 x ( 36 + 62 ) - 17 x ( 62 + 36 )

   = ( 117 - 17 ) x 98

   = 100 x 98

   = 9800