Tính nhanh:
a) (-4).(+125).(-25).(-6).(-8) b) (-98).(1 - 246) – 246.98
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a)(-4).(125).(-25).(-6).(-8) b) (-98).(1-246)-246.98
=((-4).(-25)).(125.-8).-6 =(-98).(-245)-246.98
=100.-1000.6 =24010-92708
=-600000 =-68698
a) ((-4)x(-25))x((-125)x(-8))x(-6)
=100x1000x(-6)
=100000x(-6)
=-600000
b) =(-98)x(-245)-246x98
= 98 x 245 - 246x98
= 98x(245-246)
=98x(-1)
=-98
(-4).125(-25)(-6)(-8)
= [ ( -4 ) . ( -25 ) ] . [ 125 . ( -8 ) ] . ( -6 )
= 100 . ( -1000 ) . ( -6 )
= -100000 . ( -6 )
= 600000
a,(-4).(+125).(-25).(-6).(-8)
=(-4).(-25).(+125).(-8).(-6)
=100.(-1000).(-6)
=600,000
b,(-98).(1-246)-246.98
=(-98+1).246-246.98
=(-97).246-246.98
=246.[(-97)-98]
=246.1=246
\(\text{(-4).(+125).(-25).(-6).(-8)}\)
\(=\left[\left(-4\right).\left(-25\right)\right].\left[125.\left(-8\right)\right].\left(-6\right)\)
\(=100.\left(-1000\right).\left(-6\right)\)
\(=-100000.\left(-6\right)=600000\)
\(\text{(-98).(1-246)-246.98}\)
\(=98.\left(245-246\right)\)
\(=98.\left(-1\right)\)
\(=-98\)
\(\text{63.(-25)+25.(-23)}\)
\(=25.\left[\left(-63\right)+\left(-23\right)\right]\)
\(=25.\left(-86\right)\)
\(=-2150\)
chúc bạn học tốt
(-4).125.(-25).(-6).(-8)
=4.25.8.125.(-6)
=100.1000.(-6)
=-600000
(-4).3.(-125).(-8)
=4.3.125.(-8)
=12.(-1000)
=-12000
(-98).(1-246)-246.98
=98.(246-1)-246.98
=98.(246-1-246)
=98.(-1)
=-98
(-67).(1-301)-301.67
=67.(301-1)-301.67
=67.(301-1-301)
=67.(-1)
=-67
Chúc bn làm tốt hen!
a) (-4).125.(-25).(-6).(-8) = [(-4).(-25)] . [125.(-8)] . (-6)
= 100 . (-1000) . (-6)
= 600 000
b) (-98).(1-246)-246.98 = (-98).(-245)-246.98
= 98.(245-246)
= 98 . (-1)
= -98
=a
=[(-4).(-25)].[(-8).(+125)].(-6)
=100.(-1000).(-6)
=600000
b
=(-98).(-245)-246.98
=98.245-246.98
=98.(245-246)
=98.(-1)
=-98
a) \(\left(-4\right).125.\left(-25\right).\left(-6\right).\left(-8\right)\)
\(=\left(-4\right)\left(-25\right)\left(-8\right).125.\left(-6\right)\)
\(=100.\left(-1000\right).\left(-6\right)\)
\(=600000\)
b) \(\left(-98\right)\left(1-246\right)-246.98\)
\(=\left(-98\right)\left(-245\right)-246.98\)
\(=98.245-246.98\)
\(=98.\left(245-246\right)=98.\left(-1\right)=-98\)
a)(-4)*125*(-25)*(-6)*(-8)=[(-4)*(-25)]*(-8*125)*(-6)=100*(-1000)*(-6)=600000
b)(-98)(1-246)-246*98=(-98)+98*246-246*98=(-98)
a) (-4).(+125).(-25).(-6).(-8)
= [(-4).(-25)].[(+125).(-8)].(-6)
= 100.(-1000).(-6)
= 600000
b) (-98).(1 - 246) – 246.98
= -98 + 98.246 - 246.98
= -98 + 98.(246 - 246)
= -98 + 98.0
= -98