6/7乘以( )=3/5乘以( )=9乘以( )=0.2乘以( )=1
27046=2乘以( )+7乘以( )+4乘以( )+6乘以( )
=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!
1+2乘以3+4乘以5+6乘以7+8乘以9=1005 在上面各式当中添上适当的括号使等式成立
100分之91乘以99= 16分之13 乘以(1-13分之6)= 5分之4乘以3分之8-0.8乘以
9分之4乘以( )=( )乘以8=1=0.5乘以( )
填空:4分之3乘以8=6乘以()=10乘以()
1.2乘以(-1又5分之4)乘以(-2.5)乘以(-9分之7)=?
A=B乘以57 A乘以2等于B乘以( )A乘以5等于B乘以( )A乘以()等于B乘以12 A乘以()等于B乘以29
观察1乘以2乘以3乘以4+1=25=5² 2乘以3乘以4乘以5+1=121=11²
(-36)乘以(-9分之4)+(-36)乘以6分之5+12分之7=?
3分之1乘以()=()乘以5分之2=8乘以()=()乘以0.3=1
8分之5乘以( )=( )乘以3分之2=0.1乘以( )=( )乘以12=1