tính nhanh
b) [(24+-67)]-[-67-(-24)]
c) 2^3.17-2^3.14
d) 26.(-125)-125.(-36)
e) 48-6(12+9)
f) (-67).(1-301)-301.67
a, (-67).(1-301) - 301.67
b,26.(-125)-125.(-36)
c, -16+23+x =-16
d,2x-35=15
e,|x-1|=0
f,-13.|x|=-26
tính nhanh
a) (-4).(+3).(-125).(-8)=
b) (-67).(1-301)-301.67=
(-4).(+3).(-125).(-8)=-12000
b) (-67).(1-301)-301.67= -67
tính nhanh
(-4).125.(-25).(-6).(-8)
(-98).(1-246)-246.98
(-4).3.(-125).(-8)
(-67).(1-301)-301.67
mong mọi người zúp nha
(-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!
tính hợp lí
A=(-8)*25*(-2)*4*(-5)*125
B=19*25+19*(-45)+19*(-30)
C=(26-6)*(-4)+31*(-7-13)
D=(-67)*(1-301)-300*67
(-67). (1-301)-301.67
=(-67). (-300)-301.67
=(-67). (-300)+301. (-67)
=(-67). [(-300)+301]
=(-67).1
=-67
Đúng hk mn cho mik lời nhận xét ik
3 tính
a)(-18).(55-24)-28.(44-68)
b)(-4).3(-125).25.8
c)(-67).(1.301)-301.67
\(a,\left(-18\right)\left(55-24\right)-28\left(44-68\right)\)
\(=\left(-18\right).31-28.\left(-24\right)=-558-\left(-672\right)=114\)
\(b,\left(-4\right)3\left(-125\right).25.8=\left[\left(-4\right).25\right]\left[\left(-125\right).8\right].3\)
\(=\left(-100\right)\left(-1000\right).3=300000\)
\(c,\left(-67\right)\left(1.301\right)-301.67=301\left(-67-67\right)\)
\(=301.\left(-134\right)=-40334\)
Bài 6:
e,-(-12 + 25 - 38) + ( 25 -38 + 88 ) - 250
f, ( -12 ).( 67-23 ) + 44.( -88 )
g,( -48 + 54 - 77 ) - ( 24 - 48 - 77 )
h, 11.( -42 - 26 ) + 42 . ( 11+26 )- 26.11 - 42.26
e. = 12 - 25 + 38 + 25 - 38 + 88 - 250
= ( -25 + 25) + (38 - 38) + ( 12 + 88) - 250
= -150
f. = (-12).44 + 44.(-88)
= 44 ( -12 -88 )
= 44 . 100
= 4400
g. = -48 + 54 -77 -24 + 48 + 77
= (-48 + 48) + (-77+77) + (54 -24)
= 30
h. = 11.(-42) + 11.(-26) + 42.11 + 42.26 -26.11 - 42.26
= \([11.\left(-42\right)+11.42]+\left[11.\left(-26\right)-26.11\right]+[42.26-42.26]\)
= 11. (-52)
= - 572
\(e.-\left(-12+25-38\right)+\left(25-38+88\right)-250\\ =12-25+38+25-38+88-250\\ =\left(25-25\right)+\left(38-38\right)+\left(12+88\right)-250\\ =0+0+100-250=-150\)
\(f.\left(-12\right)\cdot\left(67-23\right)+44\cdot\left(-88\right)\\ =\left(-12\right)\cdot44+44\cdot\left(-88\right)\\ =44\cdot\left[-12+\left(-88\right)\right]\\ =44\cdot\left(-100\right)=-4400\)
\(g.\left(-48+54-77\right)-\left(24-48-77\right)\\ =-48+54-77-24+48+77\\ =\left(48-48\right)+\left(54-24\right)+\left(77-77\right)\\ =0+30+0=30\)
\(h.11\cdot\left(-42-26\right)+42\cdot\left(11+26\right)-26\cdot11-42\cdot26\\ =11\cdot\left(-68\right)+42\cdot37-26\cdot11-42\cdot26\\ =-748+1554-286-1092=-572\)
Bài 1 : Tính nhanh
a) (-48)-72+36*(40-404)
b) 25*(-23)+47*(-35)-20*(-35)
c) 29*(67)-45*67+26*(67)
d) 4*(-5)-125*(-2)mũ 3+(-10) mũ 3*(-2)
Bài 2: Tính nhanh
a) (26-6)*(-4)+31*(-7-13)
b) (47-17)*(-5)+22*(-13-17)
c) (35-85)*11+29*(-14-36)
d) (153-53)*(-37)+37*(-42-58)
Giúp mình với nhé
a) (26-6)*(-4)+31*(-7-13)
=-80+-620
=-700
hacker 2k6
Tính hợp lý( nếu có thể)
a)(-47).69-31.47
b(26-6).(-2)^3-31.(-7-13)
c)15.(85-64)-85.(15-54)
e(-67).(1-301)-301.67