Tính nhanh (350-837)+(830-350) (29-18)-(48+29-18) (28-736-27)+(27-48) (48-27+29)+(27-48) (279-18)+(28-279+18) (587-95+58)-(58

2 bình luận về “Tính nhanh (350-837)+(830-350) (29-18)-(48+29-18) (28-736-27)+(27-48) (48-27+29)+(27-48) (279-18)+(28-279+18) (587-95+58)-(58”

1. (350-837)+(830-350)

   = 350 – 837 + 830 – 350

   = -7

   (29-18)-(48+29-18)

   = 29 – 18 – 48 – 29 + 18

   = -48

   (28-736-27)+(27-48)

   = 28 – 736 – 27 + 27 – 48

   = -20 – 736

   = -756

   (48-27+29)+(27-48)

   = 48 – 27 + 29 + 27 – 48

   = 29

   (279-18)+(28-279+18)

   = 279 – 18 + 28 – 279 + 18

   = 28

   (587-95+58)-(58+587)

   = 587 – 95 + 58 – 58 + 587

   = -95

   (69-288+29)-(29-288)

   = 69 – 288 + 29 – 29 + 288

   = 69

   color{purple}{@SHIN}

   Trả lời
2. Giải đáp:

    

   Lời giải và giải thích chi tiết:

    (350 – 837)+(830-350)

   =350-837+830-350

   =(350-350)-(837-830)

   =0-7

   =-7

   _______________
   (29-18)-(48+29-18)

   =29-18-48-29+18

   =(29-29)-(18-18)-48

   = 0 – 0 – 48

   = 0 – 48

   =-48

   _____________
   (28-736-27)+(27-48)

   =28-736-27+27-48

   =(28-48)-(27-27)-736

   =-20-0-736

   =-20-736

   =-20+(-736)

   =-(20+736)

   =-756

   ____________
   (48-27+29)+(27-48)

   =48-27+29+27-48

   =(48-48)-(27-27)+29

   =0-0+29

   =0+29

   =29

   ____________
   (279-18)+(28-279+18)

   =279-18+28-279+18

   =(279-279)-(18-18)+28

   =0-0+28

   =0+28

   =28

   ______________
   (587-95+58)-(58+587)

   =587-95+58-58-587

   =(587-587)-95+(58-58)

   = 0 – 95 + 0

   = -95+0

   =-95

   __________
   (69-288+29)-(29-288)

   = 69-288+29-29+288

   =69-(288-288)+(29-29)

   =69-0+0

   =69+0

   =69

   #hongnhung27092k10

   Trả lời