1.Tính nhanh
a.(-57).(67-34)-67.(34-57)
b.(-4).125.(-25).(-6).(-8)
c.(-98).(1-246)-246.98
d.237.(-26)+26.137
e.63.(-25)+25.(-23)
g.29.(19-3)-19.(29-13)
h.31.72-31.70+(-31).2
i.25.(32+47)-32.(25+47)
k.(135-35).(-37)+37.(-42-58)
Giúp mk nha cảm ơn nhìu
1.Tính nhanh
a.(-57).(67-34)-67.(34-57)
b.(-4).125.(-25).(-6).(-8)
c.(-98).(1-246)-246.98
d.237.(-26)+26.137
e.63.(-25)+25.(-23)
g.29.(19-3)-19.(29-13)
h.31.72-31.70+(-31).2
i.25.(32+47)-32.(25+47)
k.(135-35).(-37)+37.(-42-58)
Giúp mk nha cảm ơn nhìu
tính
(-21)+(133-111)-(-61-67+39)
giúp mình zứiiii
Tính :
a) (37-17).(-5)+23.(-13-17)
b) (-57).(67-34)-67.(34-57)
tính nhanh :
a) (-4).(+125).(-25).(-6).(-8)
b) (-98).(1-246)-246.98
1/ tính
a) (37-17).(-5)+23.(-13-17)
b) (-57).(67-34)-67.(34-57)
2/ tính nhanh
a) (-4).(+125).(-25).(-6).(-8)
b) (-98).(1-246)-246.98
75.(-21)
(-15).(-17)
(-57),(67-34)-67.(34-57)
(-98).(1-246)-246.98
ai tra loi dung va nhanh minh tich nha 3 cai luon
(67/111+2/33-5/117)x(1/3-25%-1/12)
Tính nhanh :
(67/111+2/33-15/117).(1/3-1/4-1/12)
thuc hien phep tinh
a)-/12-14/-/98-15+2/-14
b)(-24) -(12-19)-/15-12-7/
2) tinh hop li
a)5-(1997-2005)+1997
b)1579-(53+1679)-(-53)
c)-48725-(357-48725)+300
d)4567+(1234-4567)-4