Bài 55 trang 30 SGK Toán 6 tập 2

Điền số thích hợp vào ô trống. Chú ý rút gọn kết quả (nếu có thể):

+

 \( \displaystyle {{ - 1} \over 2}\)

 \( \displaystyle {5 \over 9}\)

 \( \displaystyle {1 \over {36}}\)

 \( \displaystyle {{ - 11} \over {18}}\)

 \( \displaystyle {{ - 1} \over 2}\)

 - 1

 

 

 

\( \displaystyle {5 \over 9}\)

 

 

 

 

 \( \displaystyle {1 \over {36}}\)

 

 

 

 

 \( \displaystyle {{ - 11} \over {18}}\)

  

 

 

 

 

Lời giải

+

 \(\displaystyle {{ - 1} \over 2}\)

 \(\displaystyle {5 \over 9}\)

 \(\displaystyle {1 \over {36}}\)

 \(\displaystyle {{ - 11} \over {18}}\)

 \(\displaystyle {{ - 1} \over 2}\)

 - 1

 \(\displaystyle {1 \over {18}}\)

 \(\displaystyle {{ - 17} \over {36}}\)

 \(\displaystyle {{ - 10} \over 9}\)

\(\displaystyle {5 \over 9}\)

 \(\displaystyle {1 \over {18}}\)

 \(\displaystyle {{10} \over 9}\)

  \(\displaystyle {7 \over {12}}\)

 \(\displaystyle {{ - 1} \over {18}}\)

 \(\displaystyle {1 \over {36}}\)

 \(\displaystyle {{ - 17} \over {36}}\)

 \(\displaystyle {7 \over {12}}\)

 \(\displaystyle {1 \over {18}}\)

 \(\displaystyle {{ - 7} \over {12}}\)

 \(\displaystyle {{ - 11} \over {18}}\)

 \(\displaystyle {{ - 10} \over 9}\)

 \(\displaystyle {{ - 1} \over {18}}\)

 \(\displaystyle {{ - 7} \over {12}}\)

 \(\displaystyle {{ - 11} \over 9}\)


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