\(\text{(-4).(+125).(-25).(-6).(-8)}\)
\(=\left[\left(-4\right).\left(-25\right)\right].\left[125.\left(-8\right)\right].\left(-6\right)\)
\(=100.\left(-1000\right).\left(-6\right)\)
\(=-100000.\left(-6\right)=600000\)
\(\text{(-98).(1-246)-246.98}\)
\(=98.\left(245-246\right)\)
\(=98.\left(-1\right)\)
\(=-98\)
\(\text{63.(-25)+25.(-23)}\)
\(=25.\left[\left(-63\right)+\left(-23\right)\right]\)
\(=25.\left(-86\right)\)
\(=-2150\)
chúc bạn học tốt
tinh:
a, (-4 ) . ( + 125) . (- 25 ) .( - 6 ) . ( - 8 )
b. ( - 98 ) . ( 1 - 246 ) - 246 .98
tinh nhanh :
a) (-4).(+125).(-25).(-6).(-8)
b)(-98).(1-246)-246.89
Tính nhanh :
a ) ( -4 ) . ( +125 ) . ( -25 ) . ( -6 ) . ( -8 )
b ) ( -98 ) . ( 1 - 246 ) - 246 . 98
Tính nhanh:
a) (-4) . (+125) . (-25) . (-6) . (-8);
b) (-98) . (1 - 246) - 246 . 98.
a)(-4).(+125).(-25).(-6).(-8)
b)(-98).(1-246)-246.98
tính nhanh:
a) (-4).(+125).(-25).(-6).(-8)
b) (-98).(1-246)-246.98
tính nhanh
c) (-4).125(-25)(-6)(-8)
d) (-98)(1-246)-246.98
3.tính
(37-17).(-5)+23.(-13-17)
(-57).(67-34)-67.(34-57)
4. Tính nhanh
(-4).(+125).(-25).(-6).(-8)
(-98).(1-246)-246.98
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
