Question

[Nguyễn Thị Phương Hoa]

Tính nhanh phân số :
18 x 123 + 9 x 4567 x 2 + 3 x 5310 x 6 / 2 x 8 x 5 x 125

Answer 1

[DORAPAN]

\(\frac{18.123+9.4567.2+3.5310.6}{2.8.5.125}\)

\(=\frac{18.123+18.4567+18.5310}{\left(2.5\right).\left(8.125\right)}\)

\(=\frac{18.\left(123+4567+5310\right)}{10.1000}\)

\(=\frac{18.10000}{10000}\)

\(=\frac{1800000}{100000}\)

\(=18\)