Question

tinh bằng cách thuận tiện:

A,18,95x75+24x18,95+18,95              B,23/100+47%+16/100=0,14

c.7,15:0,5+7,15x7+7,15

Answer 1

A, = 18,95 x (75 + 24 + 1) = 18,95 x 100 = 1895

Answer 2

c: =7,15x2+7,15x7+7,15=7,15x10=71,5

Answer 3

\(A,18,95\times75+24\times18,95+18,95\)

\(\text{= 18,95x ( 75 + 24 + 1)}\)

\(\text{= 18,95x x100}\)

\(\text{= 1895}\)

 

 B,23/100+47%+16/100+0,14

\(=\dfrac{23}{100}+\dfrac{47}{100}+\dfrac{16}{100}+\dfrac{14}{100}\)

\(=\dfrac{100}{100}\)

\(=1\)

 

\(\text{c.7,15:0,5+7,15x7+7,15}\)

\(\text{= 7,15 x 2 + 7,15 x 7 + 7,15}\)

\(\text{= 7,15 x ( 2+7 + 1)}\)

\(\text{= 7,15 x 10}\)

\(\text{= 71,5}\)