1. 计算:$11.45+(-\frac{3}{2})+(-11.45)+1\frac{1}{2}$
答案:
1.解:原式$=0$.
2. 计算:$8+(-\frac{1}{4})-5-(-0.25)$
答案:
2.解:原式$=3$.
3. 计算:$(-9)-(-7)+(-6)-(+4)-(-5)$
答案:
3.解:原式$=-7$.
4. 计算:$-\vert -23\vert -(-72)-\vert -31\vert +(+47)$
答案:
4.解:原式$=65$.
5. 计算:$-\frac{2}{3}+(+\frac{5}{7})+(-\frac{1}{3})+2\frac{4}{7}$
答案:
5.解:原式$=2\frac{2}{7}$.
6. 计算:$(\frac{2}{3}-\frac{1}{2})-[\frac{1}{3}-(+\frac{5}{6})]$
答案:
6.解:原式$=\frac{2}{3}$.
7. 计算:$0.47-4\frac{5}{6}-(-1.53)-1\frac{1}{6}$
答案:
7.解:原式$=-4$.
8. 计算:$(+3\frac{2}{5})+(-2\frac{7}{8})-(-5\frac{3}{5})-\frac{1}{8}$
答案:
8.解:原式$=6$.
9. 计算:$(-2\frac{1}{4})+(+\frac{5}{6})+(-\frac{3}{4})+(+1\frac{1}{6})$
答案:
9.解:原式$=-1$.
10. 计算:$[1.4-(-3\frac{3}{5}+5.2)-4.3]-(-\frac{3}{2})$
答案:
10.解:原式$=-3$.
查看更多完整答案,请扫码查看