Question

thực  hiện : \(\frac{3}{10}\)+ \(\frac{6}{10}\)+ \(\frac{2}{5}\)+ \(\frac{7}{10}\)

Answer 1

\(=0,3+0,6+0,4+0,7\)

\(=2\)

Answer 2

mong các bạn trả lời câu hỏi nhé

Answer 3

\(\frac{3}{10}+\frac{6}{10}+\frac{2}{5}+\frac{7}{10}=\frac{3+6+4+7}{10}=\frac{20}{10}=2\)

Answer 4

\(\frac{3}{10}+\frac{6}{10}+\frac{2}{5}+\frac{7}{10}=\frac{3}{10}+\frac{6}{10}+\frac{4}{10}+\frac{7}{10}=\frac{20}{10}=2\)=2

Answer 5

Giải theo lớp 4:

\(=\frac{3+7}{10}+\frac{6+2\times2}{10}\)

\(=2\)

Answer 6

   3/10 + 6/10 + 2/5 + 7/10

= 3/10 + 6/10 + 4/10 + 7 /10 

= ( 3/10 + 7 / 10 ) + ( 4/10 + 6/10 )

= 1                        + 1 

= 2

Answer 7

\(\frac{3}{10}+\frac{6}{10}+\frac{2}{5}+\frac{7}{10}\)

\(=\frac{3}{10}+\frac{6}{10}+\frac{4}{10}+\frac{7}{10}\)

\(=\frac{3+6+4+7}{10}\)

\(=2\)

Vậy kết quả phép tính là 2

Answer 8

2/5=2x2/5x2=4/10

3/10+6/10+4/10+7/10=20/10=2/1=2

Answer 9

3/10+6/10+2/5+7/10

=3/10+6/10+4/10+7/10

=[3/10+7/10] + [6/10+4/10]

=         1         +         1

= 2