732 - 272
tinh nhanh
Tính nhanh
b)371 + ( -271 ) + ( -531 ) + 371
c) 732 + [ 85 + ( -732 ) + ( -35 )]
Tính nhanh 732 - 272
732 – 272
= (73 + 27)(73 – 27)
= 100.46
= 4600
Tính nhanh
a) (-76) + 137 + 16 + (-77)
b) 371 + (-271) +(-531) + 371
c) 732 + [ 85 + (-732) + (-35)]
a)(-76)+137+16+(-77)
=[(-76)+16]+[137+(-77)]
=(-60)+60
=0
a) [16+(-76)]+[137+(-77)]=
b) 371+371+(-517)+(-271)=
c)[732+(-732)]+[85+(-35)=
Tính nhanh: 87 2 + 73 2 – 27 2 - 13 2
87 2 + 73 2 – 27 2 - 13 2 = ( 87 2 – 13 2 ) + ( 73 2 – 27 2 )
= (87 + 13)(87 – 13) + (73 + 27)(73 – 27)
= 100.74 + 100.46 = 100(74 + 46) = 100.120 = 12000
Tính nhanh
C) 127^2 +146+127+732
127^2+146+127+732
=16129+146+127+732
=17134
Tính nhanh
C) 127^2 +146+127+732
= 127.127+127+19+127+127.5+97
= 127.134+19+81+16
= 17018+100+16
= 17134
1 tính nhanh
-[-506+732-(-2000)]-(506-1732)
-[-506+732-(-2000)(]-(506-1738)
=-506-732+200-506+1738
=(-506+506)+(1732-732)-2000
=0+1000-2000=-1000
-1000 ai ko tick tớ sau này sinh con đều có mặt chó
-{-506+732-(-2000)-(506-1732)
=-{-506+732-2000-(506+1732)
=-{-506+506)-2000-1732
=-{0-2000-1732}
=-{-2000+1732}
=(-3452)
Tính nhanh :
A = -[-506+732-(-2000)]-(506-1732)
Giúp mk với . Nhanh lên nhé .
A = -[-506+732-(-2000)]-(506-1732)
A = -[ 226 -(-2000)]-( -1226)
A = -2226 -( -1226)
A = -1000
= - 3000 ban nha nho tk mk nha
A = -( 506+732+2000)-506-1732
A = 506+(-506)-732+1732-2000
A=-1000
mx6+732+309
giúp mình với- nhanh lên nhé T^T
\(6m+732+309=6m+1041\)
Tính nhanh:
a) 2 x 31 x 12 + 4 x 6 x 42 + 8 x 27 x 3
b) 583 x 931 + 69 x (170 + 583) + 31 x 170
c) 732 x 976 + 24 x (680 + 732) + 76 x 680
\(a,2\times31\times12+4\times6\times42+8\times27\times3\)
\(=24\times31+24\times42+24\times27\)
\(=24\times\left(31+42+27\right)\)
\(=24\times100\)
\(=2400\)
\(b,583.931+69.\left(170+583\right)+31.170\)
\(=583.931+69.170+69.583+31.170\)
\(=583.\left(931+69\right)+170.\left(69+31\right)\)
\(=583.1000+170.100\)
\(=583000+17000\)
\(=600000\)
\(c,732.976+24.\left(680+732\right)+76.680\)
\(=732.976+24.680+24.732+76.680\)
\(=732.\left(976+24\right)+680.\left(24+76\right)\)
\(=732.1000+680.100\)
\(=732000+68000\)
\(=800000\)
Học tốt
a)2400
b)600000
c)800000
a) 2 x 31 x 12 + 4 x 6 x 42 + 8 x 27 x 3
= 24 x 31 + 24 x 42 + 24 x 27
= 24 x ( 31 + 42 + 27 )
= 24 x 100
= 2400
b) 583 x 931 + 69 x ( 170 + 583 ) + 31 x 170
= 583 x 931 + 69 x 170 + 69 x 583 + 31 x 170
= 583 x ( 931 + 69 ) + 170 x ( 69 + 31 )
= 583 x 1000 + 170 x 100
= 583000 + 17000
= 600000
c) 732 x 976 + 24 x ( 680 + 732 ) + 76 x 680
= 732 x 976 + 24 x 680 + 24 x 732 + 76 x 680
= 732 x ( 976 + 24 ) + 680 x ( 24 + 76 )
= 732 x 1000 + 680 x 100
= 732000 + 68000
= 800000
Tính nhanh:
a) 73 2 - 27 2 ; b) 36 2 - 14 2 ;
c) 63 2 - 27 2 + 72 2 - 18 2 ; d) 54 2 + 82 2 - 18 2 - 46 2 .