75/100+18/21+19/32+1/4+3/21+13/32=3 ban nhe!

ung ho nhe!

=3 nha bạn

nếu đung k mình nha

=(75/100+1/4)+(18/21+3/21)+(19/32+13/32)

=1+1+1

=3

lớp 4 mà 

TÍNH NHANH: 

\(\frac{75}{100}+\frac{18}{21}+\frac{19}{32}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}\)

\(=\frac{3}{4}+\frac{18}{21}+\frac{19}{32}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}\)

\(=\left(\frac{3}{4}+\frac{1}{4}\right)+\left(\frac{18}{21}+\frac{3}{21}\right)+\left(\frac{19}{32}+\frac{13}{32}\right)\)

\(=1+1+1=3\)

K MK NHA. CHÚC BN HỌC TỐT. ^_^

tớ cần gấp nhanh lên ạ

a ) 

75/100 + 18/21 + 19/32 + 1/4 + 3/21 + 13/32

= 3/4 + 18/21 + 19/321 + 1/4 + 3/21 + 13/32

= ( 3/4 + 1/4 ) + ( 18/21 + 3/21 ) + ( 19/32 + 13/32 )

= 1 + 1 + 1 

= 3

b ) 

4 và 2/5 + 5 và 6/9 + 2 và 3/4 + 1/4 + 1/3 + 3/5

= 22/5 + 51/9 + 11/4 + 1/4 + 1/3 + 3/5 

= ( 22/5 + 3/5 ) + ( 51/9 + 1/3 ) + ( 11/4 + 1/4 )

= 25/5 + 54/9 + 12/4

= 5 + 6 + 3 

= 14

a)\(\frac{75}{100}+\frac{18}{21}+\frac{19}{32}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}=\frac{3}{4}+\frac{18}{21}+\frac{1}{4}+\frac{19}{32}+\frac{3}{21}+\frac{13}{32}\)

\(=\left(\frac{3}{4}+\frac{1}{4}\right)+\left(\frac{18}{21}+\frac{3}{21}\right)+\left(\frac{19}{32}+\frac{13}{32}\right)\)

\(=1+1+1=3\)

a: \(=\left(\dfrac{3}{4}+\dfrac{1}{4}\right)+\left(\dfrac{18}{21}+\dfrac{3}{21}\right)+\dfrac{19}{32}+\dfrac{13}{32}=1+1+1=3\)

b: \(=35\cdot1.1\cdot25\cdot\left(7,5-7,5\right)=0\)

a: $=\left(\genfrac{}{}{0ex}{}{3}{4}+\genfrac{}{}{0ex}{}{1}{4}\right)+\left(\genfrac{}{}{0ex}{}{18}{21}+\genfrac{}{}{0ex}{}{3}{21}\right)+\genfrac{}{}{0ex}{}{19}{32}+\genfrac{}{}{0ex}{}{13}{32}=1+1+1=3$

b: $=35\cdot 1.1\cdot 25\cdot \left(7,5-7,5\right)=0$

75/100+18/21+1/4+19/32+3/21+13/32=3/4+18/21+1/4+19/32+3/21+13/32
=(3/4+1/4) + (18/21+3/21) + (19/32+13/32)
= 1 + 1 + 1
= 3

tik cho mik nha

75/100+18/21+1/4+19/32+3/21+13/32=3/4+18/21+1/4+19/32+3/21+13/32
=(3/4+1/4) + (18/21+3/21) + (19/32+13/32)
= 1 + 1 + 1
= 3

tick nha ^^