《2025年运算升级卡七年级数学上册人教版》

1.$(-49)÷(-2\frac {1}{3})÷\frac {7}{3}÷(-3)$

答案： $(-49)× (-\frac{3}{7})× \frac{3}{7}× (-\frac{1}{3})=-3$

2.$(-\frac {13}{82})÷\frac {24}{41}÷(-\frac {13}{36})÷\frac {12}{41}÷(-\frac {41}{136})$

答案： $(-\frac{13}{82})× \frac{41}{24}× (-\frac{36}{13})× \frac{41}{12}× (-\frac{136}{41})=-\frac{82}{24}=-\frac{41}{12}$

3.$(-3\frac {1}{3})÷1\frac {2}{3}÷(-2\frac {2}{5})$

答案： $(-\frac{10}{3})× \frac{3}{5}× (-\frac{5}{12})=\frac{5}{6}$

4.$(-51)÷(+34)÷(-\frac {3}{8})$

答案： $(-51)× \frac{1}{34}× (-\frac{8}{3})=4$

5.$(-6)÷(-4)÷(-1\frac {1}{5})$

答案： $(-6)× (-\frac{1}{4})× (-\frac{5}{6})=-\frac{5}{4}$

6.$(-4\frac {1}{5})÷(-2\frac {4}{5})÷20\frac {1}{4}$

答案： $(-\frac{21}{5})× (-\frac{5}{14})× \frac{4}{81}=\frac{2}{27}$

7.$5\frac {1}{3}÷(-3\frac {1}{3})÷\frac {2}{7}$

答案： $\frac{16}{3}× (-\frac{3}{10})× \frac{7}{2}=-\frac{28}{5}$

8.$(-12)÷(-\frac {1}{12})÷(-100)$

答案： $(-12)× (-12)× (-\frac{1}{100})=-\frac{36}{25}$