Đáp án:
bài 1
a) (-37) +14+26+37=(37-37)+(14+26)=0+40=40
b)(-24)+6+10+24=(24-24)+6+10=0+6+10=6+10=16
c) 15+23+(-25)+(-23)=(23-23)+15+(-25)=0+15-25=15-25=-10
d) 60+33+(-50)+(-33)=(33-33)+60-50=0+60-50=60-50=10
e)(-16)+(-209)+(-14)+209=(209-209)-16-14=0-16-14=-16-14=-24
f)(-12)+(-13)+36+(-11)=36+[(-12)+(-13)+(-11)]=36-36=0
g)-16+24+16-34=(16-16)+(24-34)=0+(-10)=-10
h)25+37-48-25-37=(25-25)+(37-37)-48=0+0-48=-48
i)2575+37-2575-29=(2575-2575)+(37-29)=0+8=8
j)34+35+36+37-14-15-16-17=(34-14)+(35-15)+(36-16)+(37-17)=20.4=80
Bài 2
a)-7264+(1543+7264)=-7264+1543+7264=(7264-7264)+1543=0+1543=1543
b)(144-97)-144=144-97-144=(144-144)-97=0-97=-97
c)(-145)-(18-145)=-145-18+145=(145-145)-18=0-18=-18
d)111+(-11+27)=111-11+27=100+27=127
e)(27+514)-(486-73)=27+514-486+73=(27+73)+(514-486)=100+28=28
f)(36+79)+(145-79-36)=36+79+145-79-36=(36-36)+(79-79)+145=0+0+145=145
g)10-[12-(-9-1)]=10-12+(-9-1)=10-12-9-1=(10-1)-9-12=9-9-12=0-12=-12
h(38-29+43)-(43+38)=38-29+43-43-38=(38-38)+(43-43)-29=0+0-29=-29
i)271-[(-43)+271-(-17)]=271-(-43)-271+(-17)=(271-271)+43-17=0+43-17=43-17=26
j)-144-[29-(+144)-(+144)=-144-29+144+144=(144-144)+144-29=0+144-29=144-29=115
(cho mình câu trả lời hay nhất nha)
