Question

tính nhanh  

a) 35,879 x 48 + 35,879 x 52 

b) 4,02 x 137 - 337 x 4,02

c) 4,76 x 5 + 5,24 x 5

Answer 1

a: =35,879*100=3587,9

b: =4,02(137-337)=4,02*(-200)=-804

c:=5(4,76+5,24)=50

Answer 2

\(a)\\ =35,879(48+52)\\ =35,879*100\\ =3587,9\\ b)\\ =4,02(137-337)\\ =4,02*(-200)\\ =-804\\ c)\\ =5(4,76+5,24)\\ =5*10\\ =50\)

Answer 3

`a) 35,879 xx 48 + 35,879 xx 52`

`= 35,879 xx ( 48 + 52 )`

`= 35,879 xx 100`

`= 3587,9`

`b) 4,02 xx 137 - 337 xx 4,02`

` =4,02xx(137-337)`

`=4,02xx(-200)`

`=-804`

`c) 4,76 xx 5 + 5,24 xx 5`

`= 5 xx ( 4,76 + 5,24 )`

`= 5 xx 10`

`= 50`