0,75 + 1,5 \(\times\) 97,8 \(\times\) 0,5 + 0,25 \(\times\) 3 \(\times\) 1,2

= 0,75 \(\times\) 1 + (1,5 \(\times\) 0,5)\(\times\) 97,8 + (0,25 \(\times\)3) \(\times\) 1,2

= 0,75 \(\times\) 1 + 0,75 \(\times\) 97,8 + 0,75 \(\times\) 1,2

= 0,75 \(\times\) ( 1 + 97,8 + 1,2)

= 0,75 \(\times\) [1 + ( 97,8 + 1,2)]

= 0,75 \(\times\) [1 + 99]

= 0,75 \(\times\) 100

= 75

\(a)101\times0,75-0,75\)

\(=0,75\times(101-1)\)

\(=0,75\times100=75\)

___________________________________________

`b)10:0,5+4:0,25+8:0,125`

\(=10\times2+4\times4+8\times8\)

\(=5\times4+4\times4+4\times16\)

\(=4\times(5+4+16)\)

\(=4\times25=100\)

$a)101\times 0,75-0,75$

$=0,75\times (101-1)$

$=0,75\times 100=75$

___________________________________________

$b)10:0,5+4:0,25+8:0,125$

$=10\times 2+4\times 4+8\times 8$

$=5\times 4+4\times 4+4\times 16$

$=4\times (5+4+16)$

$=4\times 25=100$

17 x 0,75 - 17 x 0,25 + 17 x 0,5 

= 17 x ( 0,75 - 0,25 + 0,5 )

= 17 x 1 

= 17 

= 17 x ( 0,75 - 0,25  + 0,5 )

= 17 x 1 

= 17

Đúng 100%

Đúng 100%

Đúng 100%

=17 nha bạn

\(\left(92,36\text{×}0,75+92,36\text{×}0,25\right)+\left(7,64:0,1:10\right)\)

\(=\left[92,36\text{×}\left(0,75+0,25\right)\right]+\left(7,64:0,1:10\right)\)

\(=\left(92,36\text{×}1\right)+7,64=92,36+7,64=100\)

\(\left[92,36\times\left(0,75+0,25\right)\right]+\left(76,4:10\right)\)

\(=\left(92,36\times1\right)+7,64\)

\(=92,36+7,64\)

\(=10\)

sos sos sos !!!

ko ai bt à

75/100+75%.2+3/4.3+0.75.4

=3/4+3/4.2+3/4.3+3/4.4

=3/4.(1+2+3+4)

=3/4.10

=15/2

=75/100+75/100x2+75/100x3 +75/100 x4

=75/100x(1+2+3+4)

= 75/100x10

=15/2

hok tot

thank you mọi người nha

a) \(0,75x99+\dfrac{3}{4}=\dfrac{3}{4}x99+\dfrac{3}{4}=\dfrac{3}{4}x\left(99+1\right)=\dfrac{3}{4}x100=75\)

b) \(3,05x8+9,15-3,05=3,05x8+3x3,05-3,05=3,05x\left(8+3-1\right)=3,05x10=30,5\)

Tính bằng cách thuận tiện nhất.

( 792, 36 x 0,75 + 792,36 : 4 ) : ( 7, 2 : 0,1 : 10 )

= ( 792, 36 x 0,75 + 792,36 x 0,25 ) : ( 7, 2 : 0,1 : 10 )

= 792, 36 x ( 0,75 + 0,25 ) : 7, 2

= 792, 36 x 1 : 7, 2

= 792, 36 : 7, 2

= 110, 05