tinh nhanh:55832/33*56
tinh nhanh :55*32/33*56
20042004*2006/20062006*2000
55x32/33x56
=11x8x5x4/11x8x3x7
=5x4/3x7
=20/21
20042004x2006/20062006x2000
=10001x2004x2006/10001x2006x2000
=2004/2000=501/500
tinh:
235-(56+235-49+33)+140
235-(56+235-49+33)+140
tinh?
Tính nhanh:
a) -56-(47-56)+33
b) 168+(35-68)-35
a) -56 - ( 47 - 56 ) + 33
= -56 - 47 + 56 + 33
= ( -56 + 56 ) - ( 47 - 33 )
= -14
b) 168 + ( 35 - 68 ) - 35
= 168 + 35 - 68 - 35
= ( 168 - 68 ) + ( 35 - 35 )
= 100
a, -56 - ( 47 - 56 ) + 33
= - 56 - 47 + 56 + 33
= - 103 + 56 + 33
= -47 + 33 = -14
Tính nhanh:
a, 27×3 + 33×3
b, 56×4 + 56×1
c, 284 + 128 - 84
d, 49÷7 + 21÷7
Tính nhanh
33 x 4 + 5 x 33 + 33 x 3 + 33 - 99
256 + 347 + 453 - 147 - 56 -253
a) \(33\times4+5\times33+33\times3+33-99=33\times4+5\times33+33\times3+33\times1-33\times3\)
\(=33\times\left(4+5+3+1-3\right)=33\times10=330\)
b) \(256+347+453-147-56-253=\left(256-56\right)+\left(347-147\right)+\left(453-253\right)\)
\(=200+200+200=600\)
tinh nhanh ;
127.(27-56)- 27 . (127 - 56)
127.(27 - 56) - 27.(127 - 56)
= 127.27 - 127.56 - 27.127 + 27.56
= (127.27 - 27.127) - (127.56 - 27.56)
= 0 - 56(127 - 27)
= 0 - 56.100
= 0 - 5600
= -5600
127.(27-56)- 27 . (127 - 56)
\(=\left(127-127\right)\cdot\left(27-27\right)\cdot\left(56-56\right)\)
\(=0\cdot0\cdot0\)
\(=0\)
tinh nhanh:
265+5*2+56*10+56
265+5x2+56x10+56
=265+10+56x10+56
=265+56x(10+10)
=265+56x20
=265+1120
=1385
tra loi giup minh cau nay nha 56*4*56*3+56*2+56 tinh bang 2 cach
ai nhanh minh tick cho
56.4.56.3+56.2+56
=56.(56.3.4+2+1)
=56.675
=37800