Question

Tính nhanh giá trị biểu thức

3/14 : 0,5 + 3/28 :0,25+3/56

Answer 1

3/14 : 0,5 + 3/28 :0,25+3/56

=   3/7      +      3/7      + 3/56

=        6/7         +3/56

=               51/56

Answer 2

\(\frac{3}{14}:0,5+\frac{3}{28}:0,25+\frac{3}{56}\)

=\(\frac{3}{14}.2+\frac{3}{28}.4+\frac{3}{56}\)

=\(\frac{3}{7}+\frac{3}{7}+\frac{3}{56}\)

= \(\frac{24}{56}+\frac{24}{56}+\frac{3}{56}\)

=\(\frac{51}{56}\)