Question

Bài 4: Tính Nhanh
8 x 427 x 3 + 6 x 573 x 4
6 x 1235 x 20 - 5 x 235 x 24

Answer 1

\(a,8\times427\times3+6\times573\times4\)

\(=24\times427+24\times573\)

\(=24\times\left(427+573\right)\)

\(=24\times1000\)

\(=24000\)

\(b,6\times1235\times20-5\times235\times24\)

\(=120\times1235-120\times235\)

\(=120\times\left(1235-235\right)\)

\(=1235\times1000\)

\(=1235000\)

Answer 2

a: =24x427+24x573

=24000

Answer 3

$a,8\times 427\times 3+6\times 573\times 4$

$=24\times 427+24\times 573$

$=24\times \left(427+573\right)$

$=24\times 1000$

$=24000$

$b,6\times 1235\times 20-5\times 235\times 24$

$=120\times 1235-120\times 235$

$=120\times \left(1235-235\right)$

$=1235\times 1000$

$=1235000$