计算:①﹙﹣8﹚×﹙﹣7﹚ ②12×﹙﹣5﹚;③2.9×﹙﹣0.4﹚ ④﹣30.5×0.2;⑤100×﹙0.001﹚ ⑥﹣4.8×﹙﹣1.25﹚计算: ①4分之1×﹙﹣9分之8﹚ ②﹙﹣6分之5﹚×﹙﹣10分之3
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 19:23:29
![计算:①﹙﹣8﹚×﹙﹣7﹚ ②12×﹙﹣5﹚;③2.9×﹙﹣0.4﹚ ④﹣30.5×0.2;⑤100×﹙0.001﹚ ⑥﹣4.8×﹙﹣1.25﹚计算: ①4分之1×﹙﹣9分之8﹚ ②﹙﹣6分之5﹚×﹙﹣10分之3](/uploads/image/z/3841459-43-9.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A%E2%91%A0%EF%B9%99%EF%B9%A38%EF%B9%9A%C3%97%EF%B9%99%EF%B9%A37%EF%B9%9A++++++%E2%91%A112%C3%97%EF%B9%99%EF%B9%A35%EF%B9%9A%EF%BC%9B%E2%91%A22.9%C3%97%EF%B9%99%EF%B9%A30.4%EF%B9%9A+++++++++++%E2%91%A3%EF%B9%A330.5%C3%970.2%EF%BC%9B%E2%91%A4100%C3%97%EF%B9%990.001%EF%B9%9A+++++++++%E2%91%A5%EF%B9%A34.8%C3%97%EF%B9%99%EF%B9%A31.25%EF%B9%9A%E8%AE%A1%E7%AE%97%EF%BC%9A+++++%E2%91%A04%E5%88%86%E4%B9%8B1%C3%97%EF%B9%99%EF%B9%A39%E5%88%86%E4%B9%8B8%EF%B9%9A+++++++%E2%91%A1%EF%B9%99%EF%B9%A36%E5%88%86%E4%B9%8B5%EF%B9%9A%C3%97%EF%B9%99%EF%B9%A310%E5%88%86%E4%B9%8B3)
计算:①﹙﹣8﹚×﹙﹣7﹚ ②12×﹙﹣5﹚;③2.9×﹙﹣0.4﹚ ④﹣30.5×0.2;⑤100×﹙0.001﹚ ⑥﹣4.8×﹙﹣1.25﹚计算: ①4分之1×﹙﹣9分之8﹚ ②﹙﹣6分之5﹚×﹙﹣10分之3
计算:
①﹙﹣8﹚×﹙﹣7﹚ ②12×﹙﹣5﹚;
③2.9×﹙﹣0.4﹚ ④﹣30.5×0.2;
⑤100×﹙0.001﹚ ⑥﹣4.8×﹙﹣1.25﹚
计算:
①4分之1×﹙﹣9分之8﹚ ②﹙﹣6分之5﹚×﹙﹣10分之3﹚
③﹣15分之34×25 ④﹙﹣0.3﹚×﹙﹣7分之10﹚
3.写出下列各数的倒数:
﹣15;﹣9分之5;﹣0.25;0.17;4又4分之1;﹣5又5分之2
4.已知|x+2|+|y-3|=0,求﹣2又2分之1x-3分之5y+4xy的值
5.若a,b互为相反数,c,d互为倒数,m的绝对值是1,求﹙a+b﹚cd-2014m的值
6.若|a|=5,|b|=2,ab>0,则a+b=______.
7.计算:
①﹙﹣2﹚×4分之5×﹙﹣10分之9﹚×﹙﹣3分之2﹚
②﹙﹣6﹚×5×﹙﹣6分之7﹚×7分之2
③﹙﹣4﹚×7×﹙﹣1﹚×﹙﹣0.25﹚
④﹙﹣24分之5﹚×15分之8×﹙﹣2分之3﹚×4分之1
计算:①﹙﹣8﹚×﹙﹣7﹚ ②12×﹙﹣5﹚;③2.9×﹙﹣0.4﹚ ④﹣30.5×0.2;⑤100×﹙0.001﹚ ⑥﹣4.8×﹙﹣1.25﹚计算: ①4分之1×﹙﹣9分之8﹚ ②﹙﹣6分之5﹚×﹙﹣10分之3
56,-60,-1.16,-6.1,0.1,6,
-2/9,1/4,-56又2/3,3/7,
-1/15,-9/5,-4,100/17,4/17,-5/27,
﹣2又2分之1x-3分之5y+4xy=8
若a,b互为相反数,c,d互为倒数,m的绝对值是1,求﹙a+b﹚cd-2014m的值=-2014或2014
若|a|=5,|b|=2,ab>0,则a+b=7或-7
-1/2,10,-7,1/24
对了,