(-52)+7+|-52|-37
52. 63 + 52.37 - 250
b. 390- { 400 :[ 32.52 – (200 - 7. 52)]
c. (-37). 85 + 37.(-5) - 370
c. (-72): 32 – (- 18).2
tính hợp lí
a) 7.(-2)3-12.(-5)+(-17)
b) 1632-37-(-157)-163-1532
c) 47.(-918)+(-53).918
d) (-52).(-281)+(-52).181
a: \(7\cdot\left(-2\right)^3-12\cdot\left(-5\right)+\left(-17\right)\)
\(=7\cdot\left(-8\right)+60-17\)
=-56+43
=-13
b: \(1632-37-\left(-157\right)-163-1532\)
\(=\left(1632-1532\right)-37-163+157\)
=100-200+157
=57
c: \(47\cdot\left(-918\right)+\left(-53\right)\cdot918\)
\(=918\left(-47\right)+\left(-53\right)\cdot918\)
\(=918\cdot\left(-47-53\right)\)
\(=918\left(-100\right)=-91800\)
d: \(\left(-52\right)\cdot\left(-281\right)+\left(-52\right)\cdot181\)
\(=\left(-52\right)\left(-281+181\right)\)
\(=\left(-52\right)\cdot\left(-100\right)=5200\)
a: 7⋅(−2)3−12⋅(−5)+(−17)7⋅(−2)3−12⋅(−5)+(−17)
=7⋅(−8)+60−17=7⋅(−8)+60−17
=-56+43
=-13
b: 1632−37−(−157)−163−15321632−37−(−157)−163−1532
=(1632−1532)−37−163+157=(1632−1532)−37−163+157
=100-200+157
=57
c: 47⋅(−918)+(−53)⋅91847⋅(−918)+(−53)⋅918
=918(−47)+(−53)⋅918=918(−47)+(−53)⋅918
=918⋅(−47−53)=918⋅(−47−53)
=918(−100)=−91800=918(−100)=−91800
d: (−52)⋅(−281)+(−52)⋅181(−52)⋅(−281)+(−52)⋅181
=(−52)(−281+181)=(−52)(−281+181)
=(−52)⋅(−100)=5200=(−52)⋅(−100)=5200
64 . 52 + 37 + 52 -3 . 25
64 . 52 + 37 . 52 - 2 . 26
64 . 52 + 37 . 52 - 2 . 26
= 64 . 52 + 37 . 52 - 52
=52 (64+37-1)
=52.100
=5200
Tính
a , 4 7 × 5 2 : 5 14 b , 3 7 × 5 2 - 5 14
Tính
a , 4 7 × 5 2 : 5 14 = b , 3 7 × 5 2 - 5 14 =
Tính:
A = (37^3+12^3)/49-37*12
B = (52^3-48^3)/4+52*48
a) 25 - 53 : 52 + 12 : 22
b) 5 [ ( 85 - 35 : 7 ) : 8 + 90 ] - 50
c) 2. [ ( 7 - 33 : 32 ) 22 + 99 ] - 100
d) 27 : 22 + 54 : 53 . 24 - 3 . 25
e) ( 35 . 37 ) : 310 + 5 . 24 - 73 : 7
f) 32 . [ ( 52 - 3 ) : 11 ] - 24 + 2 . 103
g) ( 62007 - 62006 ) : 62006
h) ( 52001 - 52000 ) : 52000
i) ( 72005 + 72004 ) : 72004
j) ( 57 + 75 ) . ( 68 + 86 ) . ( 24 - 42 )
k) ( 57 + 79 ) . ( 54 + 56 ) . ( 33 . 3 - 92 )
l) [ ( 52 . 23) - 72 . 2 ) : 2 ] 6 - 7 . 25
tính nhanh: 64 x 52 + 37 x 52 - 2 x 26
64 X 52 + 37 X 52 - 2 X 26
= 64 X 52 + 37 X 52 - 52
= 52 X ( 64 + 37 - 1)
= 52 X 100
= 5200
64 x 52 + 37 x 52 - 2 x 26
=64 x 52 + 37 x 52 - 52 x 1
=52 x ( 64 + 37 -1 )
=52 x 100
=5200
tk nhé
64 x 52 + 37 x 52 - 2 x 26
= 64 x 52 + 37 x 52 - 52
= ( 64 + 37 - 1 ) x 52
= 5200