Question

Tính nhanh:

5x4x3

           =........... gạch ở giữa nha

12x10 

Answer 1

3/10

Answer 2

=3/10

Answer 3

\(\dfrac{5\times4\times3}{12\times10}=\dfrac{1\times1\times1}{1\times2}=\dfrac{1}{2}\)

Answer 4

\(\dfrac{5\times4\times3}{12\times10}=\dfrac{5\times4\times3}{4\times3\times2\times5}=\dfrac{1}{2}\)

Answer 5

\(\dfrac{5.4.3}{12.10}=\dfrac{5.2.2.3}{3.4.2.5}=\dfrac{2}{4}=\dfrac{1}{2}\)

Answer 6

3/10

Answer 7

\(\dfrac{5x4x3}{12x10}=\dfrac{5x2x2x3}{6x2x2x5}=\dfrac{3}{6}\)

x là nhân nha

Answer 8

3/10