Question

tính nhanh: 3*164*6+18*247+2*489*9

Answer 1

3*164*6+18*247+2*489*9

= 18 * 164 + 18 * 247 + 18 * 489

= 18 * (164 + 247 + 489)

= 18 * 900

= 16200`

Answer 2

3 x 164 x 6+ 18 x 247 + 2 x 489 x 9

= 18 x 164 + 18 x 247 + 18 x 489

= 18 x ( 164 + 247 + 489)

= 18 x 900

= 16200

Answer 3

\(3\times164\times6+18\times247+2\times489\times9\)

\(=18\times164+18\times247+18\times489\)

\(=18\times\left(164+247+489\right)\)

\(=18\times900\)

\(=16200\)

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