Toán Lớp 6: a) (–121) + (–105) + (–32) d) (–25). 376. 4 b) (–312) + 312 + (–19) e) (125.89).( – 8) c) (–15) – 12 + 36 f) 25.7.( –125).( –32)

Question

Toán Lớp 6:  a) (–121) + (–105) + (–32)  d) (–25). 376. 4 b) (–312) + 312 + (–19)  e) (125.89).( – 8) c) (–15) – 12 + 36  f) 25.7.( –125).( –32)

lantrungbach · Answer

B&agrave;i giải:     a)(-121)+(-105)+(-32)     =(-121+105+32)     =-258     b)=(-312)+312+(-19)     =[(-312)+312]+(-19)     =0+(-19)      =-19      c) (&ndash;15) &ndash; 12 + 36        =-27+36       =9      d) (&ndash;25). 376. 4      =(-15).4.376       =-100.376       =-37600       e) (125.89).( &ndash; 8)       =125.(-8).89       =(-1000).89       =-89000       f) 25.7.( &ndash;125).( &ndash;32)       =25.7(-125).(-8).4       =25.7(-125).(-8).7       =100.1000.7       =100000.7       =700000

mocmien87 · Answer

Giải đáp:       Lời giải và giải thích chi tiết:    a) (&ndash;121) + (&ndash;105) + (&ndash;32)      =(-226) + (-32)     =-258     d) (&ndash;25). 376. 4     =[(-25). 4]. 376     =(-100). 376     =-37600     b) (&ndash;312) + 312 + (&ndash;19)      =0+ (-19)     =-19     e) (125.89).( &ndash; 8)     =11125. (-8)     =-89000     c) (&ndash;15) &ndash; 12 + 36      =(-27)+ 36     =9     f) 25.7.( &ndash;125).( &ndash;32)     =175. ( &ndash;125).( &ndash;32)     =-21875. (-32)     =700000