Question

Bài 7: Viết số thích hợp vào chỗ chấm:

4/16=2/.....=...../4          50/70=10/.....=....../7        

 

                                                                   

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Answer 1

4/16=2/8=1/4

50/70=10/14=5/7

Answer 2

gọi cái số cần tìm là x

\(\dfrac{4}{16}=\dfrac{2}{x}\Rightarrow4\times x=16\times2=32\\ \Rightarrow x=32:4\\ \Rightarrow x=8\\ \dfrac{2}{8}=\dfrac{x}{4}\Rightarrow2\times4=8\times x=8\\ \Rightarrow x=8:8\\ \Rightarrow x=1\)

ta có: \(\dfrac{4}{16}=\dfrac{2}{8}=\dfrac{1}{4}\)

Answer 3

4/16 = 2/8 = 1/4

50/70 = 10/14 = 5/7