34(-84)+17(-32)
tính nhanh
TÍNH NHANH:
a)34.(-84)+17.(-32)
b)-215.54-430.23
34.(-84)+17.(-32)
=17.(-188)+17.(-32)
=19.(-164-32)
=19.(-200)
=-3800
b, -215.54+430.23
=-215.54-215.46
=215.(-53-46)
=215.(-100)
=-21500
Tính nhanh
a, -326 - ( 115- 326)
b, 34. (-84) + 17 . ( -32)
a, -326 - (115-326)
= - 326 -115 + 326
= -115
b, 34.(-84)+17.(-32)
= 34.(-84)+17.2.(-16)
=34.(-84)+34.(-16)
=34.[(-84)+(-16)]
=34.(-100)
=-3400
=.= hk tốt!!
Tính nhanh
32 x (-39) + 16 x ( -22)
34 x (-84) + 17 (-32)
Help me!!!!!!!! T _ T
=16x2x(-39) + 16x(-22)
= 16 x (-78) + 16 x (-22)
= 16 x ( -78 + (-22)
= 16 x (-100)
= -1600
\(17\times2\times\left(-84\right)+17\times\left(-22\right)\)
\(17\times\left(-168\right)+17\times\left(-22\right)\)
\(17\times\left(-168+\left(-22\right)\right)\)
\(17\times\left(-190\right)\)
-3230
Tính nhanh
a) 34.(-84)+17.(-32)
b)4524+(-864)+9999+(-36)+(-8999)
c)1000+(-137)+263+(-572)+(-291)
d)(-329)+15+(-101)+440+(-25)
a) 34.(-84) + 17.(-32)
= 17.2.(-84) + 17 .(-32)
= 17. (-168) + 17.(-32)
= 17.(-168 - 32)
= 17. (-200)
= -3400
b) 4524 + (-864) + 9999 + (-36) + ( -8999)
= 4524 - 864 + 9999 - 36 - 8999
= 3660 + (9999 - 8999) - 36
= 3660 + 1000 - 36
= 4624
c) 1000 + (-137) + 263 + (-572) + (-291)
= 1000 - 137 + 263 - 572 - 291
= 263
d) (-329) + 15 + (-101) + 440 + (-25)
= 15 - 329 - 101 + 440 - 25
= 0
34.(-84)+17.(-32)
34.(-84) + 17.(-32)
= (-2856) + (-544)
= -3400
34.(-84)+17.(-32)
34.(-84)+17.(-32)=17.2.(-84)+17.(-32)
=17.(-84.2)+17.(-32)
=17.(-168)+17.(-32)
=17.[(-168)+(-32)]=17.(-200)=-3400
34.(-84)+17.(-32)=(-2856)+(-544)
=-3400
chúc bạn học giỏi!
Tính nhanh
a) 34.(-84)+17.(-32)
b)4524+(-864)+9999+(-36)+(-8999)
c)1000+(-137)+263+(-572)+(-291)
d)(-329)+15+(-101)+440+(-25)
\(a.\)
\(34.\left(-84\right)+17.\left(-32\right)\)
\(=17.\left(-168\right)+17.\left(-32\right)\)
\(=17.\left(-168+-32\right)\)
\(=17.\left(-200\right)\)
\(=-3400\)
\(b.\)
\(4524+\left(-864\right)+9999+\left(-36\right)+\left(-8999\right)\)
\(=\left[4524+\left(-864\right)\right]+\left[9999+\left(-8999\right)\right]+\left(-36\right)\)
\(=3660+1000+\left(-36\right)\)
\(=4624\)
\(c.\)
\(1000+\left(-137\right)+263+\left(-572\right)+\left(-291\right)\)
\(=\left[263+\left(-572\right)+\left(-291\right)\right]+1000+\left(-137\right)\)
\(=\left(-600\right)+1000+\left(-137\right)\)
\(=400+\left(-137\right)\)
\(=263\)
\(d.\)
\(\left(-329\right)+15+\left(-101\right)+440+\left(-25\right)\)
\(=\left[15+\left(-25\right)\right]+\left[440+\left(-101\right)+\left(-329\right)\right]\)
\(=\left(-10\right)+10\)
\(=0\)
tính hợp lý :
a, -234-(123-234)
b, -24 . 33+ 40 . 24 +13 . 30 +13 . 46
c, 34 . (-84)+ 17 . (-32)
ai làm nhanh tui k cho ạ, giúp vs đang cần gấp
-234-(123-234)
= -234-123+234
= 123
\(a,-234-\left(123-234\right)\)
\(=-234-123+234\)
\(=-123\)
\(b,-24.33+40.24+13.30+13.46\)
\(=24\left(-33+40\right)+13\left(30+46\right)\)
\(=24.13+13.76\)
\(=13.\left(24+76\right)\)
\(=13.100=1300\)
\(c,34.\left(-84\right)+17.\left(-32\right)\)
\(=17.2.\left(-84\right)+17.\left(-32\right)\)
\(=17.\left(-168-32\right)\)
\(=17.\left(-200\right)\)
\(=-3400\)
a) -326-(115-326)
b) 34.(-84)+17.(-32)
Giúp mình nha !!!
a) -326 - (115 - 326)
= -326 - 115 + 326
= (326 - 326) - 115
= 0 - 115
= -115
b) 34.(-84) + 17.(-32)
= 17 .2.(-84) + 17.(-32)
= 17.(-168) + 17.(-32)
= 17.(-168 - 32)
= 17.(-200)
= -3400
mik đang âm , ủng hộ nha
a) -326-(115-326)
=-326-115+326
=(-326+326)-115
=0-115
=-115
b) 34.(-84)+17.(-32)
=17.2.(-84)+17.(-32)
=17.(-168)+17.(-32)
=17.[(-168)+(-32)]
=17.(-6200)
=-105400