(12乘以12乘以45)除以(15乘以4乘以7)怎么用分数知识巧算
3/8乘以4/7除以3/8乘以4/7用简便方法怎么算?
25乘以?乘以?等于(?乘以12)乘以(?乘以?
25乘以48=25乘以(4乘以2)=(25乘以4)乘以12=100乘以12=1200这是应用了什么知识
分数简算 3/4乘以16= 12除以3/5= 0.3乘以5/6= 1除以7/8=
用递等式计算,7/9乘以3/14乘以3/4,12除以6/7除以2/3,2/5乘以2/3除以1/6,3/10除以5/6乘以
27046=2乘以( )+7乘以( )+4乘以( )+6乘以( )
54乘以45加90乘以23怎么巧算
(-7)乘以(-11)减12乘以(-8)
6/11乘以7/8减去5/12乘以6/11 用简便方法怎么算
(2-1除以2)乘以(2-2除以3)乘以(2-3除以4)乘以~乘以(2-2002除以2003)要怎么算?
=3乘以2乘以1,=4乘以3乘以2乘以1,=5乘以4乘以3乘以2乘以1,那么100!除以99!
要过程4/9乘以3/5乘以5/12 (1/3+1/12)乘以1/15 8/9除以4/7除以1/3 3/4乘以5/6+3/