Question

4 nhân 21 nhân 25 =?

173 nhân 12-12 nhân 73 = ?

 

Answer 1

a, \(4\cdot21\cdot25\)

\(=\left(4\cdot25\right)\cdot21=100\cdot21=2100\)

b, \(173\cdot12-12\cdot73\)

\(=12\left(173-73\right)=12\cdot100=1200\)

Answer 2

2100, 150672

Answer 3

4.21.25

= 4.25.21

=100.21

=2100

173.12-12.73

= 12. ( 173-73)

=12.100

=1200

~LucMIlk~