Question

[Hà Nguyễn]

Tính nhanh :

75% + 18/21 + 19/32 + 25% + 3/21 + 13/32

35 x 11 x 0,1 x 0,25 x 100 x ( 3 : 0,4 - 7,5)

Answer 1

[Nguyễn Lê Phước Thịnh]

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

Answer 2

[Trần Quang Tuấn]

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