Đáp án:
a)1230
b)422
c)-17
d)60
e)-398
f)130
g)1100
h)700
k)-2
l)-65
m)0
n)15600
o)7600
p)1710
q)-2632
r)3400
Giải thích các bước giải:
a)4567+(1234-4567)-4
=4567+1234-4567-4
=1234-4
=1230
b)2001-(53+1579)-(-53)
=2001-53-1579+53
=2001-1579
=422
c)35-17+2017-35+(-2017)
=35-17+2017-35-2017
=-17
d)37+(-17)-37+77
=37-17-37+77
=60
e)-(-219)+(-219)-410+12
=219-219-410+12
=-398
f)l-85l-(-3).15
=-(-85)-(-45)
=85+45
=130
g)11.107+11.18-25.11
=11(107+18-25)
=11.100
=1100
h)115-(-85)+53-(-500+53)
=115+85+53+500-53
=700
k)(-18)+(-31)+98+l-18l+(-69)
=(-18)-31+98+(-(-18))-69
=-18-31+98+18-69
=-2
l)17(15-16)+16(17-20)
=17.(-1)+16.(-3)
=(-17)+(-48)
=-65
m)15.(-176)+15.76+100.15
=15.(-176+76+100)
=15.0
=0
n)79.89-79.(-11)-100.(-77)
=79.(89+11)-100.(-77)
=79.100-100.(-77)
=100.(79+77)
=100.156
=15600
o)153.177-153.77+100.(-77)
=153.(177-77)+100.(-77)
=153.100+100.(-77)
=100.(153-77)
=100.76
=7600
p)69.l-45l-31.l45l
=69.(-(-45))-31.45
=69.45-31.45
=45.(69-31)
=45.38
=1710
q)(-29).(85-47)-85.(47-29)
=(-29).85-47.(-29)+85.(-47)+29.85
=85.(-29+29)-47.(-29+85)
=85.0-47.56
=-47.56
=-2632
r)(-167).(67-34)-67.(34-167)
=(-167).67+167.34+67.(-34)+67.167
=67.(-167-34)+167.(34+67)
=67.(-201)+167.101
=-13467+16867
=3400
chúc bn may mắn!!
