=1

đầy đủ đi bán

\(a,3,47\times\dfrac{1}{2}-2,47:2+0,5=a,3,47\times\dfrac{1}{2}-2,47\times\dfrac{1}{2}+\dfrac{1}{2}=\dfrac{1}{2}\times\left(3,47-2,47+1\right)=\dfrac{1}{2}\times2=1\)

a: \(=1+0.5=1.5\)

\(\dfrac{1}{4}:0,25-\dfrac{1}{8}:0,125+\dfrac{1}{2}:0,5-\dfrac{1}{16}:0,0625\\ =0,25:0,25-0,125:0,125+0,5:0,5-0,0625:0,0625\\ =1-1+1-1\\ =0+1-1\\ =1-1\\ =0\)

1/4:1/4-1/8:1/8+1/2:1/2-1/16:1/16

=1-1+1-1 

=0

\(=\frac{1}{4}x\frac{1}{8}x3x4x8x\frac{1}{3}=1\)

\(\dfrac{1}{4}\) : 0,25 - \(\dfrac{1}{8}\) : 0,125 + \(\dfrac{1}{2}\) : 0,5 - 1

= 0,25 x 4 - 0,125 x 8 + 0,5 x 2 - 1

= 1 - 1 + 1 - 1

= 0 + 1 - 1

= 1 - 1

= 0

A = \(\dfrac{1}{4}\) : 0,25 - \(\dfrac{1}{8}\): 0,125 + \(\dfrac{1}{2}\): 0,5 - 1

A = \(\dfrac{1}{4}\) x 4 - \(\dfrac{1}{8}\) x 8 + \(\dfrac{1}{2}\) x 2 - 1

A = 1 - 1 + 1  - 1

A =  (1 - 1) + (1 - 1)

A = 0 

Viết lại, ta có :

\(\frac{0,25\times96\times0,25\times1}{3}\)

\(=\frac{0,25\times4\times0,125\times8\times1\times3}{3}\)( Tách \(96=4\times8\times3\))

\(=\frac{1\times1\times3}{3}\)

\(=\frac{3}{3}=1\)

bang 1

Mọi ng giúp mình nha, minh cần gấp 

5 : 0,5 +18 : 0,25 + 2,25 : 0,125 

= ( 5: 0,5) + (18 : 0,25) + ( 2,25 : 0,125)

= 10 + 72 + 18

= 100

     5 : 0,5 + 8 : 0,25 + 125 : 0,125

=  5 x 2 + 8 x 4 + 125 x 8 

= 10 + 32 + 1000

= 42 + 1000

= 1042 

1042